photosynthesis class 7 icse mcq

• Andhra Pradesh
• Chhattisgarh
• West Bengal
• Madhya Pradesh
• Maharashtra
• Jammu & Kashmir
• NCERT Books 2022-23
• NCERT Solutions
• NCERT Notes
• NCERT Exemplar Books
• NCERT Exemplar Solution
• States UT Book
• School Kits & Lab Manual
• NCERT Books 2021-22
• NCERT Books 2020-21
• NCERT Book 2019-2020
• NCERT Book 2015-2016
• RD Sharma Solution
• TS Grewal Solution
• TR Jain Solution
• Selina Solution
• Frank Solution
• Lakhmir Singh and Manjit Kaur Solution
• I.E.Irodov solutions
• ICSE - Goyal Brothers Park
• ICSE - Dorothy M. Noronhe
• Micheal Vaz Solution
• S.S. Krotov Solution
• Evergreen Science
• KC Sinha Solution
• ICSE - ISC Jayanti Sengupta, Oxford
• ICSE Focus on History
• ICSE GeoGraphy Voyage
• ICSE Hindi Solution
• ICSE Treasure Trove Solution
• Thomas & Finney Solution
• SL Loney Solution
• SB Mathur Solution
• P Bahadur Solution
• Narendra Awasthi Solution
• MS Chauhan Solution
• LA Sena Solution
• Integral Calculus Amit Agarwal Solution
• IA Maron Solution
• Hall & Knight Solution
• Errorless Solution
• Pradeep's KL Gogia Solution
• OP Tandon Solutions
• Sample Papers
• Previous Year Question Paper
• Important Question
• Value Based Questions
• CBSE Syllabus
• CBSE MCQs PDF
• Assertion & Reason
• New Revision Notes
• Revision Notes
• Question Bank
• Marks Wise Question
• Toppers Answer Sheets
• Exam Paper Aalysis
• Concept Map
• CBSE Text Book
• Additional Practice Questions
• Vocational Book
• CBSE - Concept
• KVS NCERT CBSE Worksheets
• Formula Class Wise
• Formula Chapter Wise
• Toppers Notes
• Most Repeated Question
• Diagram Based Question
• Study Planner
• Competency Based Questions
• JEE Previous Year Paper
• JEE Mock Test
• JEE Crash Course
• JEE Sample Papers
• JEE Toppers Notes
• JEE Formula
• JEE Important Question
• JEE Mind Map
• JEE Integer-Numerical Type Question
• JEE Study Planner
• Important Info
• SRM-JEEE Previous Year Paper
• SRM-JEEE Mock Test
• VITEEE Previous Year Paper
• VITEEE Mock Test
• BITSAT Previous Year Paper
• BITSAT Mock Test
• Manipal Previous Year Paper
• Manipal Engineering Mock Test
• AP EAMCET Previous Year Paper
• AP EAMCET Mock Test
• COMEDK Previous Year Paper
• COMEDK Mock Test
• GUJCET Previous Year Paper
• GUJCET Mock Test
• KCET Previous Year Paper
• KCET Mock Test
• KEAM Previous Year Paper
• KEAM Mock Test
• MHT CET Previous Year Paper
• MHT CET Mock Test
• TS EAMCET Previous Year Paper
• TS EAMCET Mock Test
• WBJEE Previous Year Paper
• WBJEE Mock Test
• AMU Previous Year Paper
• AMU Mock Test
• CUSAT Previous Year Paper
• CUSAT Mock Test
• AEEE Previous Year Paper
• AEEE Mock Test
• UPSEE Previous Year Paper
• UPSEE Mock Test
• CGPET Previous Year Paper
• BCECE Previous Year Paper
• JCECE Previous Year Paper
• LPU Mock Test
• Crash Course
• Previous Year Paper
• NCERT Based Short Notes
• NCERT Based Tests
• NEET Sample Paper
• NEET Toppers Notes
• NEET Formula
• NEET Important Question
• NEET Assertion Reason Question
• NEET Study Planner
• Previous Year Papers
• Quantitative Aptitude
• Numerical Aptitude Data Interpretation
• General Knowledge
• Mathematics
• Agriculture
• Accountancy
• Business Studies
• Political science
• Enviromental Studies
• Mass Media Communication
• Teaching Aptitude
• Verbal Ability & Reading Comprehension
• Logical Reasoning & Data Interpretation
• CAT Mock Test
• CAT Important Question
• CAT Vocabulary
• CAT English Grammar
• MBA General Knowledge
• CAT Mind Map
• CAT Study Planner
• CMAT Mock Test
• SRCC GBO Mock Test
• SRCC GBO PYQs
• XAT Mock Test
• SNAP Mock Test
• IIFT Mock Test
• MAT Mock Test
• CUET PG Mock Test
• CUET PG PYQs
• MAH CET Mock Test
• MAH CET PYQs
• NAVODAYA VIDYALAYA
• SAINIK SCHOOL (AISSEE)
• Mechanical Engineering
• Electrical Engineering
• Electronics & Communication Engineering
• Civil Engineering
• Computer Science Engineering
• CBSE Board News
• Scholarship Olympiad
• School Admissions
• Entrance Exams
• All Board Updates
• Miscellaneous
• State Wise Books
• Engineering Exam

MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE

Free mcq test, table of content, photosynthesis and respiration test - 9.

Duration: 15 Mins

Maximum Marks: 15

Read the following instructions carefully.

1. The test contains 15 total questions.

2. You have to finish the test in 15 minutes.

3. You will be awarded 1 mark for each correct answer.

4. There is no negative marking.

5. You can view your Score & Rank after submitting the test.

6. Check detailed Solution with explanation after submitting the test.

7. Rank is calculated on the basis of Marks Scored & Time

Photosynthesis and Respiration Test - 8

Photosynthesis and respiration test - 7, photosynthesis and respiration test - 6, photosynthesis and respiration test - 5, photosynthesis and respiration test - 4.

Duration: 10 Mins

Maximum Marks: 10

1. The test contains 10 total questions.

2. You have to finish the test in 10 minutes.

Photosynthesis and Respiration Test - 3

Photosynthesis and respiration test - 2, photosynthesis and respiration test - 1.

As we all know that objective questions are majorly asked in the exam, so as to make students comfortable while attempting it, the MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE are created by our subject matter experts as per the latest syllabus. By practising questions on Photosynthesis and Respiration, students can gain updated knowledge of the chapter as well as can improve their understanding towards the topics and concepts. 

Online ICSE Photosynthesis and Respiration MCQ Questions for Class 7

Through the Photosynthesis and Respiration MCQ Questions for Class 7 Biology ICSE , students can attempt the questions in the online mode as it is available on the Selfstudys website. After practising these questions of Photosynthesis and Respiration, students can match their answers with the actual answers. The best part about the online ICSE Photosynthesis and Respiration Structure questions is that students can practise from their comfort zone without much compexitỵ 

Where Can Students Find MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE?

Students can find the MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE from the Selfstudys website, steps to download are explained below: 

• Visit the Selfstudys website. 

• Search for Free Study Materials and then click CISCE from the given list. 

• Select MCQ Test from the given list. 

• A new page will appear, click class 7 from the list of classes.
• Click Biology from the list of subjects. A drop down menu will appear, click Photosynthesis and Respiration from the list of classes. 

What Are the MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE?

The MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE typically consist of a stem or a question which is followed by a list of options. One of these options is right and others are wrong; students need to mark an accurate option of class 7 Photosynthesis and Respiration question. The question may be a complete sentence or incomplete phase, students need to select after completing Photosynthesis and Respiration chapter. 

Attributes of MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE

The attributes of MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE are discussed below: 

• Provides Clear and Concise Questions: The ICSE Photosynthesis and Respiration MCQ questions for class 7 are clear and concise so that students can easily understand what is being asked and accordingly can attempt it. 
• Provides Accurate Answers: After solving class 7 ICSE Photosynthesis and Respiration MCQ questions, students can refer to the accurate answers to match with their own answers. Through this, students can check their accuracy for the Biology chapter Photosynthesis and Respiration. 
• Relevant to the Topic: The questions in the ICSE class 7 Photosynthesis and Respiration are relevant to the topic; so to attempt this properly students need to understand the chapter. 
• Appropriate Difficulty Level: The questions of Photosynthesis and Respiration are neither difficult nor easy, that is it is appropriate for ICSE class 7 students. 
• Includes Various Types of Questions: The class 7 Photosynthesis and Respiration questions includes different types of questions so that students can recall the relevant information. 
• Provides Well Structured Options: The options of class 7 Photosynthesis and Respiration are well structured so that students can select the accurate answer without much thinking. 

Why Are MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE Important?

The MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE are important for students to attempt as it provides many benefits, those benefits are: 

• Can Assess Knowledge: The ICSE Photosynthesis and Respiration MCQ questions for class 7 are considered to be an important study tool as it helps students to assess their knowledge. To test the knowledge in the proper way, students need to complete the Photosynthesis and Respiration chapter in a proper way. 
• Time Efficient: The class 7 ICSE Photosynthesis and Respiration MCQ questions are time efficient, that is students don’t need to think much to mark the accurate answers compared to essay type answers.
• Provides Immediate Feedback: The multiple choice questions can provide immediate feedback to students so that they can identify those areas of Photosynthesis and Respiration which need improvement. 
• Can Get Familiar With the Format: By practising MCQs of class 7 Photosynthesis and Respiration, students can get familiar with the exam format; this can automatically reduce the anxiety level during the final exam. 
• Device Friendly: The MCQs of class 7 Photosynthesis and Respiration are device friendly that is students can practise those questions from their own device without much difficulty. 
• Reduces the Lengthy Answers: Students don’t need to write lengthy answers in MCQs of class 7 ICSE Photosynthesis and Respiration rather they just need to mark the accurate option.

Mastering MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE

Some tips to master in MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE are discussed below so that students can refer to it: 

• Understand the Concepts: Before attempting ICSE Photosynthesis and Respiration MCQ questions for class 7, students should make sure that they have solid understanding related to the chapter. To have a solid understanding in the chapter Photosynthesis and Respiration, students can refer to the textbooks, notes, reference books. 
• Practise Regularly: Students are advised to practise questions and quizzes of Photosynthesis and Respiration on the regular basis so that students can build confidence as well as can identify those areas which need improvement. 
• Analyse the Question: Pay close attention to the class 7 ICSE Photosynthesis and Respiration MCQ questions so that one can understand what is being asked in the question and can attempt accordingly. 
• Eliminate the Distractors: While analysing the options of class 7 Photosynthesis and Respiration, students need to eliminate the distractors: incorrect options. Through this, accurate options of MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE are clearly visible. 
• Follow the Given Instructions: In the process of mastering the MCQs of Photosynthesis and Respiration, it is very important for students to follow the given instructions so that they can avoid unnecessary mistakes. 
• Check for Clues: Look for the clues in the questions or options of ICSE class 7 Photosynthesis and Respiration so that students can easily analyse the right answers.

Things to be Taken Care While Solving MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE

Here are some important things that students need to take care of while solving MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE:

• Read the Instructions Carefully: Before starting to attempt the ICSE Photosynthesis and Respiration MCQ questions for class 7, it is advisable to read the instructions carefully. The instructions of Photosynthesis and Respiration questions may include format of the questions, marking scheme and many more. 
• Focus on the Given Question: Read the question or stem carefully to get an idea about the concept of Photosynthesis and Respiration which is asked and attempt it accordingly. 
• Look for the Keywords: A keyword is a word which tells the main idea of the question of Photosynthesis and Respiration; it is advisable for students to look for those keywords and analyse the accurate option. 
• Avoid Tricky Questions: If students are facing any kind of difficulty in understanding the MCQs of class 7 Photosynthesis and Respiration, then it is better to avoid that question and move toward the next one; this can actually save much time. 
• Observe Negative Wording: Students often fail to observe the negative words in MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE and this can majorly confuse them. To avoid confusions in these, students need to complete the class 7 Biology chapter Photosynthesis and Respiration in the proper way. 
• Avoid Guessing: Guessing means to give an answer for a question of Photosynthesis and Respiration without being sure of the facts. Students are advised not to guess any kind of answers of class 7 Biology Photosynthesis and Respiration as it makes unnecessary mistakes. 

The Impact of MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE in the Preparation

The MCQ Questions for Photosynthesis and Respiration Class 7 Biology ICSE can have a significant impact in the preparation, those major impact are discussed below: 

• Focus on Important Topics: The ICSE Photosynthesis and Respiration MCQ questions for class 7 can help students to identify the important topics and concepts. By practising these MCQs, students can focus on their study effort to complete the important topics of Photosynthesis and Respiration. 
• Encourages Active Learning: The class 7 ICSE Photosynthesis and Respiration MCQ questions encourage student’s active learning. Through active learning, students can score well on questions related to Photosynthesis and Respiration. 
• Can Improve Performance: By practising questions of class 7 ICSE Biology Photosynthesis and Respiration, students can create their own study strategies; accordingly they can score well. 
• Builds Confidence: By successfully answering MCQs of ICSE class 7 Photosynthesis and Respiration, students can build their confidence and understanding level. This can motivate students to perform well in quizzes of Photosynthesis and Respiration. 
• Helps in Identifying Weak Areas: Practising multiple choice questions of Photosynthesis and Respiration helps students in identifying weak areas; accordingly they can eliminate those weak areas. 
• Helps in Exam Preparation: The MCQs of class 7 Photosynthesis and Respiration are considered to be exam format which are asked majorly in exams; by practising these questions students can also be well prepared for the exams. 

• NCERT Solutions for Class 12 Maths
• NCERT Solutions for Class 10 Maths
• CBSE Syllabus 2023-24
• Social Media Channels
• Login Customize Your Notification Preferences

• Second click on the toggle icon

Provide prime members with unlimited access to all study materials in PDF format.

Allow prime members to attempt MCQ tests multiple times to enhance their learning and understanding.

Provide prime users with access to exclusive PDF study materials that are not available to regular users.

Photosynthesis and Respiration

Class 7 - concise biology selina, multiple choice questions.

Carbohydrates are stored by plants in the form of:

Reason — Glucose is formed in leaves very rapidly during the photosynthesis and it cannot be transported to other parts with the same rapidity. So, several molecules of glucose join together to form insoluble starch for temporary storage.

Stomata are present on the surface of:

• Flower petals

Reason — Stomata are present on the surface of leaves to facilitate exchange of gases between the leaf and the atmosphere.

Which one of the following is the immediate end-product of photosynthesis?

Reason — Fructose, Cellulose and lactose are polymers of glucose.

Short Answer Questions

Why do leaves generally look green?

Leaves generally look green because of the presence of chlorophyll, a pigment that imparts green colour to leaves.

Which four of the following are needed for photosynthesis in a leaf?

• Carbon dioxide
• Chlorophyll

Following are the four things which are needed for photosynthesis in a leaf:

What is the source of energy for photosynthesis?

The source of energy for photosynthesis is Sunlight.

Which gas is taken in and which one is given out by a green leaf in bright sunlight?

(i) Taken in: ............... (ii) Given out: ...............

(i) Taken in: Carbon dioxide (ii) Given out: Oxygen

Suppose we compare the leaf with a factory, match the items in Column A with those in Column B.

State whether the following statements are True or False:

(i) Green plants prepare their food by using two raw materials, oxygen and water.

(ii) The chlorophyll enables the plants to use light energy.

(iii) The free oxygen in the atmospheric air is the result of photosynthesis.

(iv) Photosynthesis occurs only in chlorophyll-containing parts of the plant.

(i) False Corrected Statement — Green plants prepare their food by using two raw materials; Carbon dioxide and water.

Differentiate between aerobic and anaerobic respiration. Write the overall chemical equations of the two kinds of respiration in plants.

(i) Aerobic: ...............

(ii) Anaerobic: ...............

Chemical equations of the two kinds of respiration in plants are:

(i) Aerobic:

Glucose + Oxygen → Enzymes \xrightarrow{\text{Enzymes}} Enzymes ​ Carbon dioxide + water + Energy (38 ATP)

(ii) Anaerobic:

Glucose → Enzymes \xrightarrow{\text{Enzymes}} Enzymes ​ Ethanol + Carbon dioxide + Energy (2 ATP)

Explain how photosynthesis is different from respiration.

The differences between Photosynthesis and Respiration are explained below:

Do the plants respire all day and night or only during the day? Give reasons.

Plants respire all day and night as plants require a constant supply of energy for all the different processes that go on inside the cells of the plant body. Energy is required for the growth of the plant, for root cells to penetrate the soil and absorb water and minerals and so many other such activities. Thus, Respiration occurs continuously in plants, during both day and night.

Question 10

What happens to the energy liberated during respiration?

The energy liberated during respiration is utilized for all the different processes that go on inside the cells of the plant body. Energy is required for the growth of the plant, for root cells to penetrate the soil and absorb water and minerals.

Long Answer Questions

In order to carry out photosynthesis, what are the substances that a plant must take in? Also mention their sources.

In order to carry out photosynthesis, the substances that a plant must take in are Carbon dioxide and Water. Photosynthesis also require the presence of Chlorophyll and Sunlight.

Following are their sources:

• Carbon dioxide — Atmosphere
• Water — Soil
• Sunlight — Sun
• Chlorophyll — contained in the leaves.

What is the role of chlorophyll in photosynthesis?

Chlorophyll is found in mesophyll cells of leaf, inside the plastids called chloroplast. Chlorophyll is very important as it absorbs the sunlight which provides energy for the process of photosynthesis. This energy is used to split water molecules (H 2 O) into hydrogen ions (H + ) and hydroxyl ions (OH - ). Oxygen from the hydroxyl ion is released into the air and hydrogen ions combine with carbon dioxide to form glucose.

Do plants need oxygen? If so, what is its source?

Plants need oxygen for respiration. The source of oxygen is atmosphere.

• MCQ On Photosynthesis

MCQ on Photosynthesis

Photosynthesis is the process by which plants, algae and some bacteria use sunlight, carbon dioxide and water to prepare their food. This is a biogeochemical process in which light energy is converted into chemical energy.

Photosynthesis takes place in the chloroplast. The chlorophyll present in the chloroplast traps the light from the sun and carries out the process.

Photosynthesis MCQs

1. Photosynthesis occurs in

• Chloroplast
• Endoplasmic reticulum

2. The optimum temperature for photosynthesis is

Also Read: Photosynthesis

3. Photorespiration occurs in

• Four cell organelles
• Two cell organelles
• One cell organelle
• Three cell organelle

4. Reduction of NADP occurs in

• Oxidative photophosphorylation
• Cyclic photophosphorylation
• Non-cyclic photophosphorylation

5. Kranz anatomy is found in the leaves of

Also Read: Light Reaction

6. Peroxisomes are involved in which type of reactions

• Calvin cycle
• Glyoxylate cycle
• Glycolate cycle
• Bacterial photosynthesis

7. Photorespiration involves oxidation of

• Chlorophyll a
• Both a and b

8. C3 and C4 plants differ with respect to

• Number of ATP molecules consumed
• First product
• The substrate which accepts carbon dioxide

Also Read: Photorespiration

9. In Calvin cycle, 1 molecule of glucose is formed from

• 6CO 2 + 30ATP + 12NADPH
• 6CO 2 + 12ATP
• 6CO 2 + 18ATP + 12NADPH
• 6CO 2 + 18ATP + 30NADPH

10. Where does the light reaction takes place?

11. Electrons from the excited chlorophyll molecules of PS-II are first accepted by

• Cytochrome f
• Cytochrome b

Also Read: Electron Transport Chain

12. Non-cyclic photophosphorylation results in the production of

• ATP and NADPH

13. DCMU inhibits

• Oxidative phosphorylation
• It destroys chloroplast

Also Read: Glycolysis

14. Maximum photosynthesis occurs in

• White light
• Green light

15. The first acceptor of CO 2 in C4 plants is

• Aspartic acid
• Oxaloacetic acid
• Phosphoenolpyruvate

16. The first product of C4 pathway is

• Oxaloacetate

Also Read: TCA cycle

17. The two pigment system theory of photosynthesis was proposed by

18. H 2 donor during photosynthesis is

Also Read: Photosynthesis in Higher Plants

19. The minerals involved in splitting reaction during photosynthesis is

• Potassium and manganese
• Magnesium and chlorine
• Potassium and chlorine
• Manganese and chlorine

20. The water-soluble photosynthetic pigment is

• Xanthophyll
• Anthocyanin
• Chlorophyll b

Also Read: Calvin cycle

You might also be interested in

Important questions for class 11

Important questions for class 12

Biology MCQs

Important questions on Photosynthesis

Register with BYJU'S & Download Free PDFs

Register with byju's & watch live videos.

Photosynthesis mcq test - Class 7 PDF Download

Top courses for class 7, faqs on photosynthesis mcq test - class 7, photosynthesis mcq test - class 7, shortcuts and tricks, viva questions, past year papers, semester notes, important questions, video lectures, study material, mock tests for examination, extra questions, objective type questions, sample paper, previous year questions with solutions, practice quizzes.

Photosynthesis mcq test Free PDF Download

Importance of photosynthesis mcq test, photosynthesis mcq test notes, photosynthesis mcq test class 7 questions, study photosynthesis mcq test on the app, welcome back, create your account for free.

Forgot Password

Change country.

ICSE /Class 7

Biology mcq based on   respiration and photosynthesis in plants.

Our free online Biology test quiz for Class 7, ICSE will assist you to improve your Biology skills on every concept in a fun interactive way.

ICSE Class 7 Biology Respiration and photosynthesis in plants

Respiration

Photosynthesis

Respiration and Photosynthesis

None of the above

The process that fuels the plant's cellular activities.

The process that converts glucose made during photosynthesis into energy.

During respiration, plants create their own food while during photosynthesis, plants consume food to keep plant cells alive 

_________ is a product of aerobic respiration.

The process that transforms light energy into chemical energy.

EMP pathway

TCA pathway

Carbon sequestration

Glycolysis is also known as ________

Vitamins  

In what form Carbohydrates are stored in plants?

Oxidation and Decarboxylation

Alpha-ketoglutarate dehydrogenase results in _________

Roots  

Leaves    

Flower petals

Stems  

Where are stomata present in plants?

Respiration     

Photosynthesis  

Respiration and Photosynthesis  

In the morning what process is happening in the leaf of a plant.

Think about it!

Aerobic respiration needs oxygen. It is the release of a relatively large amount of energy in cells by the breakdown of food substances in the presence of oxygen: glucose + oxygen → carbon dioxide + water.

Which process transforms light energy into chemical energy.

Glycolysis is a cytoplasmic pathway that breaks down glucose into two three-carbon compounds and generates energy. Glucose is trapped by phosphorylation, with the help of the enzyme hexokinase. Adenosine triphosphate (ATP) is used in this reaction and the product, glucose-6-P, inhibits hexokinase.

Properties of carbohydrates

Alpha-ketoglutarate dehydrogenase does not result in Reduction and Oxidation

Stomata is present in.

Welcome to JustTutors

Please Wait...

Having trouble? Please contact [email protected] for further support

Select Your Country

At JustTutors, we believe in the power of digital technology to help students get personalized learning and attention from India's best-in-class science, english and math tutors. We are focused on creating a top-class e-learning platform that brings together the best teachers, technology, media, content for creating a seamless and world-class experience for every student.

Need Help ?

We are here to help you! Chat with us on WhatsApp for any queries.

Photosynthesis and Respiration ICSE Class-7th Concise Selina Biology Solutions

Photosynthesis and Respiration ICSE Class-7th Concise Selina Biology Solutions Chapter-4 .We Provide Step by Step Answer of Objective, True False , Fill in the blanks , Match the following , Short/Long Answer Type of Exercise-4 Photosynthesis and Respiration. Visit official Website  CISCE    for detail information about ICSE Board Class-7.

Photosynthesis and Respiration ICSE Class-7th Concise Selina Biology Solutions Chapter-4

Review Questions 

Multiple Choice Questions

1. put a tick (✓ ) against the most appropriate alternative in the following statements..

(i) Carbohydrates are stored by plants in the form of: (a) Vitamins (b) Proteins (c) Fats (d) Glucose .

(ii) Stomata are present on the surface of: (a) Leaves (b) Roots (c) Stem (d) Flower petals

(iii) Which one of the following is an end-product of photosynthesis ? (a) Fructose (b) Glucose (c) Cellulose (d) Lactose

Short Answer Questions ( Photosynthesis and Respiration ICSE Class-7th )

Question 1..

Why do leaves generally look green ? Ans. The green colour of a leaf is due to the presence of chlorophyll.

Question 2.

Which four of the following are needed for photosyn-thesis in a leaf: (i) Carbon dioxide: (ii) Oxygen: (iii) Nitrates : (iv) Water: (v) Chlorophyll: (vi) Soil: (vii) Light:

Ans. (i) Carbon dioxide: from air (iv) Water: from soil (v) Chlorophyll: contained in leaf (vii) Light: from sunlight

Question 3.

What is the source of energy for photosynthesis ? Ans. Light is the ultimate source of energy in photosynthesis because plants take in the sunlight CO 2  and H 2 O and converts it into glucose.

Question 4.

Which gas is taken in and which one is given out by the leaf in bright sunlight ? (i) Taken in : (ii) Given out: Ans. (i) Carbon dioxide (ii) Oxygen

Question 5.

Suppose we compare the leaf with a factory, match the items in Column A with those in Column B. Column A          Column B

Question 6.

State whether the following statements are True or False: (i) Green plants prepare their food by using two raw materials, oxygen and water. False.  Green plants prepare their food by using raw materials, CO, chlorophyll and water. (ii) The chlorophyll enables the plants to use light energy.  True (iii) The free oxygen in the atmospheric air is the result of photosynthesis.  True (iv) Photosynthesis occurs only in chlorophyll-containing parts of the plant. True

Question 7.

Differentiate between aerobic and anaerobic respiration. Write the overall chemical equations of the two kinds of respiration in plants. (i) Aerobic: (ii) Anaerobic:

Aerobic respiration

• It occurs in the presence of oxygen.
• Here there is complete breakdown of glucose releasing carbon-di-oxide, energy. water and energy.
• More energy is released (38 ATP).

Anaerobic respiration

• It occurs in the absence of oxygen.
• There is partial breakdown of glucose into ethyl alohol, carbon-di-oxide and
• Lesser energy is released (2 ATP).

(i) Aerobic respiration:

Question 8.

 Explain how photosynthesis is different from respiration.

 different between Photosynthesis and respiration.

photosynthesis

• Anabolic process
• Food is produced here.
• Oxygen is by-product.
• Chlorophyll and sunlight are required.
• Occur only during daytime.
• Occurs in green plants only.

Respiration

• Catabolic process
• Food is broken down form here to release energy
• Carbon-di-oxide is the by-product.
• Chlorophyll and sunlight are notrequired.
• Occurs all the time
• Occurs in all living beings including plants.

Photosynthesis :

Question 9.

 Do the plants respire all day and night or only during the night ? Answer: The plants respire only during the night. Plants take in oxygen and give out carbon dioxide. Hence, there is some truth in the belief that one should not sleep under the trees at night.

Question 10.

 What happens to the energy liberated during respiration? Answer: The energy liberated during respiration is utilised for carrying out various life processes. Some of the energy liberated during the breakdown of 03 the glucose molecule, is in the form of heat, but a large part of it is converted into chemical energy called Adenosine Triphosphate (ATP). Any activity inside the cell is carried out by the energy released by these ATP molecules.

Long Answer Questions ( Photosynthesis and Respiration ICSE Class-7th )

In order to carry out photosynthesis, what are the substances that a plant must take in ? Also mention their sources.

For preparing food, the plants require the following :

• Water (from soil)
• Carbon dioxide (from air)
• Chlorophyll (contained in the leaf)
• Energy (from sunlight)

The process of preparing or synthesising food using water from the soil and carbon dioxide from the air, together chlorophyll and sunlight is called photosynthesis. This entire process is a series of complex chemical reactions Photosynthesis is represented as follows:

What is the role of chlorophyll in photosynthesis ? Answer: This pigment is of utmost importance as it absorbs the sunlight which provides energy for the process of photosynthesis occurs inside the chloroplast of the leaf.

Do plants need oxygen ? If so, what is its source ? Answer: Yes plants need oxygen, all the free oxygen in the atmospheric air is the result of photosynthesis. No animal can survive without oxygen as it is needed for respiration. Even the plants use the same oxygen in dark for their own respiration.

— : end of Photosynthesis and Respiration Solutions :–

Return to –    ICSE Class-7 Selina Concise Biology Solutions

Please share with your friends

Julius Caesar Act-5 Scene-1 Summary: ICSE Class 10 Drama

ICSE ISC Exam Date Sheet 2025: CISCE Time Table to be Out ….

CISCE Preboard 2025: How Much Preboard Compulsory..?

Leave a Comment Cancel reply

This site uses Akismet to reduce spam. Learn how your comment data is processed .

Selina Chapter 4 Photosynthesis and Respiration Questions Answers Class 7 Biology

Icse solutions for  chapter 4 photosynthesis and respiration class 7 biology selina publisher.

Review Questions

Multiple choice questions, short answer questions.

Long Answer Questions

• Water (from soil)
• Carbon dioxide (from air)
• Chlorophyll (contained in the leaf)
• Energy (from sunlight)

Additional Questions

Check your progress, answer these questions..

Answer the following in one word.

A. tick the most appropriate answer., e. differentiate between, f. answer the following in short..

G. Answer the following in detail.

You might like

Contact form.

Selina Concise Biology Class 7 ICSE Solutions – Photosynthesis and Respiration

ICSE Solutions Selina ICSE Solutions ML Aggarwal Solutions

ICSESolutions.com provides step by step solutions for Selina Concise ICSE Solutions for Class 7 Biology. You can download the Selina Concise Biology ICSE Solutions for Class 7 with Free PDF download option. Selina Publishers Concise Biology for Class 7 ICSE Solutions all questions are solved and explained by expert teachers as per ICSE board guidelines.

Selina Class 7 Biology ICSE Solutions Chemistry Physics Maths Geography History & Civics

Selina Concise ICSE Solutions for Class 7 Biology Chapter 4 Photosynthesis and Respiration

• The process of preparing or synthesising food using water from the soil and carbon dioxide from the air, together chlorophyll and sunlight is called photosynthesis .
• Photosynthesis occurs in the mesophyll cells of the leaf. These cells contain numerous plastids called chloroplasts.
• With in the plastids is present the green pigment called chlorophyll.
• On the lower surface of the leaf are numerous pores called stomata , which open into small air cavities inside the leaf.
• Stomata are tiny openings found mainly on the lower surface of leaves. These openings are surrounded by a pair of bean¬shaped cells called guard cells.
• All plants have a transport system called vascular system. It is composed of two types of tissues called xylem and phloem.
• Glucose (C 6 H 12 O 6 )
• The energy released during respiration is stored as chemical energy in the form of ATP — adenosine tri-phosphate.
• Aerobic respiration — C 6 H 12 O 6 +6O 2  →   6CO 2 +6H 2 O+38ATP Anaerobic respiration — C 6 H 12 O 6  →  2C 2 H 5 OH+2CO 2 +2ATP
• During vigorous exercise, the cells respire anaerobically and form lactic acid which accumulate in the muscle cells causing fatigue and pain.

• The respiratory organs of the fish are gills.
• Transpiration is the loss of water in the form of water vapour from the aerial parts of the plant.
• Transpiration occurs through stomata.
• Temperature
•  Maintain the concentration of the sap inside the plant body.
• Causes cooling effect

Review Questions

Multiple Choice Questions 1. Put a tick (✓ ) against the most appropriate alternative in the following statements. (i) Carbohydrates are stored by plants in the form of: (a) Vitamins (b) Proteins (c) Fats (d) Glucose 

(ii) Stomata are present on the surface of: (a) Leaves (b) Roots (c) Stem (d) Flower petals

(iii) Which one of the following is an end-product of photosynthesis ? (a) Fructose (b) Glucose (c) Cellulose (d) Lactose

Short Answer Questions

1. Why do leaves generally look green ? Answer: The green colour of a leaf is due to the presence of chlorophyll.

2. Which four of the following are needed for photosyn-thesis in a leaf: (i) Carbon dioxide: (ii) Oxygen: (iii) Nitrates : (iv) Water: (v) Chlorophyll: (vi) Soil: (vii) Light: Answer: (i) Carbon dioxide: from air (iv) Water: from soil (v) Chlorophyll: contained in leaf (vii) Light: from sunlight

3. What is the source of energy for photosynthesis ? Answer: Light is the ultimate source of energy in photosynthesis because plants take in the sunlight CO 2 and H 2 O and converts it into glucose.

4. Which gas is taken in and which one is given out by the leaf in bright sunlight ? (i) Taken in : (ii) Given out: Answer: (i) Carbon dioxide (ii) Oxygen

6. State whether the following statements are True or False: (i) Green plants prepare their food by using two raw materials, oxygen and water. False. Green plants prepare their food by using raw materials, CO, chlorophyll and water. (ii) The chlorophyll enables the plants to use light energy.  True (iii) The free oxygen in the atmospheric air is the result of photosynthesis.  True (iv) Photosynthesis occurs only in chlorophyll-containing parts of the plant. True

7. Differentiate between aerobic and anaerobic respiration. Write the overall chemical equations of the two kinds of respiration in plants. (i) Aerobic: (ii) Anaerobic: Answer: Aerobic respiration

• It occurs in the presence of oxygen.
• Here there is complete breakdown of glucose releasing carbon-di-oxide, energy. water and energy.
• More energy is released (38 ATP).

Anaerobic respiration

• It occurs in the absence of oxygen.
• There is partial breakdown of glucose into ethyl alohol, carbon-di-oxide and
• Lesser energy is released (2 ATP).

• Anabolic process
• Food is produced here.
• Oxygen is by-product.
• Chlorophyll and sunlight are required.
• Occur only during daytime.
• Occurs in green plants only.

Respiration

• Catabolic process
• Food is broken down form here to release energy
• Carbon-di-oxide is the by-product.
• Chlorophyll and sunlight are notrequired.
• Occurs all the time
• Occurs in all living beings including plants.

Respiration:

C 6 H 12 O 6 +6O→6CO 2 +6H 2 0+energy

Question 9.  Do the plants respire all day and night or only during the night ? Answer: The plants respire only during the night. Plants take in oxygen and give out carbon dioxide. Hence, there is some truth in the belief that one should not sleep under the trees at night.

Question 10.  What happens to the energy liberated during respiration? Answer: The energy liberated during respiration is utilised for carrying out various life processes. Some of the energy liberated during the breakdown of 03 the glucose molecule, is in the form of heat, but a large part of it is converted into chemical energy called Adenosine Triphosphate (ATP). Any activity inside the cell is carried out by the energy released by these ATP molecules.

Long Answer Questions

Question 1. In order to carry out photosynthesis, what are the substances that a plant must take in ? Also mention their sources. Answer: For preparing food, the plants require the following :

• Water (from soil)
• Carbon dioxide (from air)
• Chlorophyll (contained in the leaf)
• Energy (from sunlight)

Question 2.  What is the role of chlorophyll in photosynthesis ? Answer: This pigment is of utmost importance as it absorbs the sunlight which provides energy for the process of photosynthesis occurs inside the chloroplast of the leaf.

Question 3. Do plants need oxygen ? If so, what is its source ? Answer: Yes plants need oxygen, all the free oxygen in the atmospheric air is the result of photosynthesis. No animal can survive without oxygen as it is needed for respiration. Even the plants use the same oxygen in dark for their own respiration.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *