What is Photosynthesis?

1. What is the primary purpose of photosynthesis?

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

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

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

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

5. Photosynthesis occurs in which two main stages?

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

6. What is the role of water in photosynthesis?

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

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

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

8. Which energy source drives photosynthesis?

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

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

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

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