CBSE Photosynthesis in Higher Plants Class 11 MCQs of Biology Chapter 11

Photosynthesis in Higher Plants MCQs: Multiple-choice questions (MCQs) play a pivotal role in CBSE exams. They assess a student's comprehensive understanding, covering various topics efficiently. MCQs enable objective evaluation, reduce subjectivity, and expedite result processing. They also encourage critical thinking and provide a fair assessment platform for students. As per the sample paper released by CBSE, the first section of the CBSE Class 11 Biology exam will comprise MCQs. Thus, students should practice them regularly and know what types of MCQs can be formed from each chapter.

Here are a few Photosynthesis in Higher Plants Class 11 MCQs that our biology experts have created for you. Check here the Photosynthesis in Higher Plants Class 11 MCQs with answers to enhance your understanding.

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Photosynthesis in Higher Plants Class 11 MCQs

1. What is the primary pigment responsible for capturing light energy during photosynthesis?

a. Chlorophyll a

b. Chlorophyll b

c. Carotenoids

d. Xanthophylls

2. During photosynthesis, which molecule is the source of carbon that is fixed into organic compounds?

a. Carbon dioxide (CO₂)

b. Oxygen (O₂)

c. Water (H₂O)

d. Glucose (C₆H₁₂O₆)

3. Where does the light-dependent reaction of photosynthesis occur in plant cells?

a. Chloroplasts

b. Mitochondria

c. Cytoplasm

d. Nucleus

4. What is the primary product of the light-dependent reactions of photosynthesis?

a. Glucose

b. ATP (Adenosine Triphosphate)

c. Oxygen

d. Carbon dioxide

5. In which part of the chloroplast do the light-independent reactions (Calvin cycle) occur?

a. Stroma

b. Thylakoid membrane

c. Outer membrane

d. Inner membrane

6. During the Calvin cycle, what is the role of NADPH (Nicotinamide Adenine Dinucleotide Phosphate) and ATP?

a. They are used to produce glucose.

b. They capture light energy.

c. They transfer high-energy electrons.

d. They fix carbon dioxide.

7. In C3 plants, what is the first stable compound formed during carbon fixation in the Calvin cycle?

a. Glyceraldehyde-3-phosphate (G3P)

b. 3-phosphoglyceric acid (3-PGA)

c. Ribulose-1,5-bisphosphate (RuBP)

d. Phosphoenolpyruvate (PEP)

8. Which environmental factor can limit the rate of photosynthesis in plants?

a. Temperature

b. Oxygen concentration

c. Light intensity

d. Carbon dioxide concentration

9. In the process of photosynthesis, what is the overall equation for the conversion of carbon dioxide and water into glucose and oxygen?

a. 6CO₂+ 12H₂O + light energy → C₆H₁₂O₆+ 6O₂ + 6H₂O

b. 6CO₂+ 6H₂O + light energy → C₆H₁₂O₆+ 6O₂

c. C₆H₁₂O₆+ 6O₂+ light energy → 6CO₂+ 12H₂O

d. C₆H₁₂O₆+ 6O₂→ 6CO₂ + 6H₂O + light energy

10. Which type of photosynthesis pathway is adapted to reduce water loss in arid conditions?

a. C3 photosynthesis

b. C4 photosynthesis

c. CAM photosynthesis

d. Oxygenic photosynthesis

Answer Key

1. a (Chlorophyll a)

2. a (Carbon dioxide (CO₂))

3. a (Chloroplasts)

4. c (Oxygen)

5. a (Stroma)

6. d (They fix carbon dioxide.)

7. b (3-phosphoglyceric acid (3-PGA))

8. d (Carbon dioxide concentration)

9. 6CO₂+ 6H₂O + light energy → C₆H₁₂O₆+ 6O₂

10. c (CAM photosynthesis)

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