Understanding Photosynthesis

Biology

This text explains the process of photosynthesis, how plants use sunlight, water, and carbon dioxide to create their own food (sugar) and release oxygen. It highlights the role of stomata, chloroplasts, and chlorophyll in this vital process, emphasizing plants' importance as the 'lungs of the world'.

plants science ecology

20 Questions Easy Ages 6+ Mar 3, 2026

Choose a Study Format

Quiz

Test your knowledge with multiple-choice questions and instant feedback.

Flashcards

Flip through cards to review terms, definitions and key concepts.

True or False

Quickly decide if statements are true or false to reinforce understanding.

Match Game

Race against time to match questions with their correct answers.

Study Guide

Read through all topics and answers as a comprehensive study reference.

Listen Mode

Listen to questions and answers read aloud — great for audio learners on the go.

About this Study Set

This study set covers Biology through 20 practice questions. This text explains the process of photosynthesis, how plants use sunlight, water, and carbon dioxide to create their own food (sugar) and release oxygen. It highlights the role of stomata, chloroplasts, and chlorophyll in this vital process, emphasizing plants' importance as the 'lungs of the world'. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 20 questions from the Understanding Photosynthesis study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is a good source of Vitamin D mentioned in the text?

A Water
B Sunlight
C Food
D Air

2 What Greek word means 'light'?

A Synthesis
B Photo
C Carbon
D Oxygen

3 What Greek word means 'putting together'?

A Photo
B Light
C Synthesis
D Together

4 Photosynthesis is the process plants use to make their:

A Water
B Oxygen
C Food
D Nutrients

5 Besides sunlight, what two other things do plants use to make food?

A Oxygen and sugar
B Water and carbon dioxide
C Nutrients and air
D Roots and leaves

6 What are the tiny openings in plant leaves called?

A Chloroplasts
B Roots
C Stomata
D Pigments

7 What gas do plants breathe in?

A Oxygen
B Carbon dioxide
C Nitrogen
D Water vapor

8 What gas do plants give out?

A Carbon dioxide
B Oxygen
C Nitrogen
D Water vapor

9 Where are chloroplasts found in plants?

A Roots
B Stomata
C Leaves
D Stem

10 What do chloroplasts contain?

A Sugar and oxygen
B Water and sunlight
C Tiny pigments
D Carbon dioxide

11 What are chloroplasts used to turn carbon dioxide, water, and sunlight into?

A Oxygen and air
B Sugar and oxygen
C Water and nutrients
D Food and energy

12 What is the sugar produced by plants used for?

A To release oxygen
B As their food
C To absorb water
D To make carbon dioxide

13 What is chlorophyll?

A A tiny opening in leaves
B A gas plants breathe out
C A green pigment in plants
D A nutrient absorbed by roots

14 Why do plants often look green?

A Because they absorb sunlight
B Because of the chlorophyll pigment
C Because of the stomata
D Because they make sugar

15 Plants are known as the lungs of the world because they:

A Take in oxygen and give out carbon dioxide
B Take in carbon dioxide and give out oxygen
C Absorb water and nutrients
D Produce sugar for food

16 What does the word 'photo' mean?

A Putting together
B Light
C Plant
D Food

17 What does the word 'synthesis' mean?

A Light
B Plant
C Food
D Putting together

18 The process of using light to put things together is called:

A Respiration
B Transpiration
C Photosynthesis
D Absorption

19 Plants absorb water and other nutrients through their:

A Leaves
B Stomata
C Roots
D Chloroplasts

20 What are the main ingredients for photosynthesis?

A Sugar, oxygen, and water
B Sunlight, water, and carbon dioxide
C Roots, leaves, and stem
D Chlorophyll, stomata, and nutrients

📱

Study on the go

Download Quixly and access all study formats on your phone — anywhere, anytime.