Photosynthesis: Powering Life on Earth

Biology

Photosynthesis is the process used by plants, algae, and some bacteria to convert sunlight, water, and carbon dioxide into oxygen and glucose (sugar) for energy. It occurs in chloroplasts within cells.

Photosynthesis Plants Energy

7 Questions Medium Ages 10+ Nov 26, 2025

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About this Study Set

This study set covers Biology through 7 practice questions. Photosynthesis is the process used by plants, algae, and some bacteria to convert sunlight, water, and carbon dioxide into oxygen and glucose (sugar) for energy. It occurs in chloroplasts within cells. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 7 questions from the Photosynthesis: Powering Life on Earth study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the main purpose of photosynthesis?

A To make food for plants
B To absorb water from the soil
C To release carbon dioxide
D To decompose dead organisms

2 What are the main ingredients needed for photosynthesis?

A Oxygen, glucose, and sunlight
B Water, carbon dioxide, and sunlight
C Nitrogen, oxygen, and water
D Sugar, oxygen, and minerals

3 What are the two main products of photosynthesis?

A Carbon dioxide and water
B Oxygen and glucose
C Nitrogen and carbon dioxide
D Water and minerals

4 Where does photosynthesis primarily occur in plant cells?

A Mitochondria
B Nucleus
C Chloroplasts
D Cell wall

5 What are the two main layers on the top of the leaf?

A Palisade and Spongy Mesophyll
B Cuticle and Epidermis
C Vein and Spongy Mesophyll
D Chloroplast and Vein

6 What is the name of the cycle that occurs in the light-independent reaction?

A Krebs Cycle
B Calvin Cycle
C Oxygen Cycle
D Water Cycle

7 What happens to water during the light-dependent reaction?

A It is reduced.
B It is oxidized.
C It is synthesized.
D It is condensed.

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