Test your knowledge on photosynthesis with our latest MCQ on Photosynthesis for Competitive Exams 2024
Table of Contents
MCQ on Photosynthesis
1. Which of the following is the primary pigment responsible for capturing light energy in photosynthesis?
a) Xanthophyll
b) Chlorophyll a
c) Carotene
d) Chlorophyll b
Answer: b) Chlorophyll a
2. In which organelle does photosynthesis primarily take place in plant cells?
a) Nucleus
b) Mitochondria
c) Chloroplast
d) Endoplasmic reticulum
Answer: c) Chloroplast
3. What are the products of the photosynthesis reaction?
a) Glucose and oxygen
b) Glucose and carbon dioxide
c) Water and carbon dioxide
d) Oxygen and carbon dioxide
Answer: a) Glucose and oxygen
4. Which stage of photosynthesis requires sunlight?
a) Calvin cycle
b) Light-independent reaction
c) Light-dependent reaction
d) None of the above
Answer: c) Light-dependent reaction
5. Which of the following factors does NOT affect the rate of photosynthesis?
a) Light intensity
b) Carbon dioxide concentration
c) Temperature
d) Soil pH
Answer: d) Soil pH
6. What is the by-product of the light-dependent reaction in photosynthesis?
a) Glucose
b) Oxygen
c) Carbon dioxide
d) Water
Answer: b) Oxygen
7. Which molecule carries the energy produced during the light-dependent reaction to the light-independent reaction?
a) ATP
b) NADPH
c) Glucose
d) Oxygen
Answer: b) NADPH
8. What is the primary source of carbon dioxide for photosynthesis in plants?
a) Soil
b) Air
c) Water
d) Sunlight
Answer: b) Air
9. Which of the following organisms does NOT perform photosynthesis?
a) Green plants
b) Cyanobacteria
c) Fungi
d) Algae
Answer: c) Fungi
10. What is the ultimate source of energy for photosynthesis?
a) Glucose
b) Water
c) Sunlight
d) Carbon dioxide
Answer: c) Sunlight