What is Photosynthesis?

1. What is the primary purpose of photosynthesis?

A) To generate heat energy.
B) To produce carbon dioxide.
C) To convert light energy into chemical energy.
D) To absorb nutrients from soil.

2. What pigment is primarily responsible for capturing light energy in plants?

A) Carotene.
B) Chlorophyll.
C) Melanin.
D) Xanthophyll.

3. What is the light-dependent reaction of photosynthesis primarily concerned with?

A) Oxygen production only.
B) Water absorption.
C) Synthesis of glucose.
D) Converting light into chemical energy.

4. Which molecule is a primary energy carrier produced in photosynthesis?

A) ADP.
B) GTP.
C) NADH.
D) ATP.

5. Photosynthesis occurs in which two main stages?

A) Dark reactions and aerobic respiration.
B) Light-dependent reactions and Calvin cycle.
C) Glycolysis and Krebs cycle.
D) Cellular respiration and fermentation.

6. What is the role of water in photosynthesis?

A) To absorb sunlight.
B) To produce glucose directly.
C) To transport nutrients.
D) To provide electrons and protons.

7. Where in the chloroplast does the Calvin cycle take place?

A) Outer membrane.
B) Thylakoid membrane.
C) Inner membrane.
D) Stroma.

8. Which energy source drives photosynthesis?

A) Electricity.
B) Nuclear energy.
C) Sunlight.
D) Heat.

9. Which process do plants use to create glucose from carbon dioxide and water?

A) Photosynthesis.
B) Respiration.
C) Transpiration.
D) Digestion.

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