How Plants Grow?

What is the main purpose of photosynthesis?

• a) To produce energy for plants

• b) To release carbon dioxide into the atmosphere

• c) To produce glucose and oxygen from sunlight

• d) To break down glucose for energy

2. Which of the following is NOT required for photosynthesis?

• a) Water

• b) Oxygen

• c) Carbon dioxide

• d) Sunlight

3. Where in the plant cell does photosynthesis mainly occur?

• a) Mitochondria

• b) Chloroplasts

• c) Nucleus

• d) Ribosomes

4. What pigment is responsible for absorbing sunlight in plants?

• a) Carotene

• b) Hemoglobin

• c) Chlorophyll

• d) Xanthophyll

5. What is the gas that plants take in during photosynthesis?

• a) Oxygen

• b) Nitrogen

• c) Carbon dioxide

• d) Hydrogen

6. What are the two main products of photosynthesis?

• a) Water and carbon dioxide

• b) Glucose and oxygen

• c) Oxygen and nitrogen

• d) Glucose and carbon dioxide

7. Which part of the plant absorbs sunlight for photosynthesis?

• a) Leaves

• b) Roots

• c) Stem

• d) Flowers

8. What is the role of chlorophyll in photosynthesis?

• a) To produce oxygen

• b) To store glucose

• c) To transport water

• d) To absorb sunlight

9. What happens to the glucose produced during photosynthesis?

• a) It is released into the air

• b) It is used as food for the plant

• c) It is broken down into oxygen

• d) It is converted into carbon dioxide

10. How does the stomata contribute to photosynthesis?

• a) It absorbs sunlight

• b) It releases oxygen into the air

• c) It allows carbon dioxide to enter the plant

• d) It stores glucose