Photosynthesis Quiz LE 2025

4. Which can be said about blue light vs. yellow light?

• A Blue light has a short wavelength and is effective for plant absorption
• B Yellow light is just about the best color of light for plant absorption
• C Yellow light has the shortest wavelength but it cannot be absorbed effectively
• D Blue light has a longer wavelength which provides more energy than yellow light

6. What was the main reason the term "dark reaction" was changed to "light-independent reaction"?

• A Light always plays a direct role in all phases of photosynthesis
• B The dark reaction can occur with light or without it
• C Dark reactions always require darkness
• D Dark reactions never occur in light

8. What is the main organelle associated with photosynthesis?

• A Chloroplast
• B Mitochondrion
• C Endoplasmic reticulum
• D Ribosomes

3. Which specific sugar is produced by photosynthesis?

• A Sucrose
• B Glucose
• C Galactose
• D Maltose

2. What are the raw materials ("ingredients") plants would use to make sugar for themselves?

• A Carbon dioxide and oxygen
• B Carbon dioxide and sunlight
• C Water and carbon dioxide
• D Sunlight and oxygen

12. Which plant organs are most responsible for photosynthesis?

• A Roots
• B Stems
• C Flowers
• D Leaves

14. The picture shows a structure that

• A regulates the flow of carbon dioxide and oxygen in and out of the plant
• B protects the plant from disease
• C releases wax
• D is found in underground roots to help absorb water

9. What does sunlight do in photosynthesis?

• A It splits water
• B It causes photolysis to occur
• C It brings about the release of oxygen from plants
• D All of the above answers are correct

1. What types of organisms are able to carry out photosynthesis?

• A Animals and Plants
• B Plants only
• C Plants and Fungi
• D Plants, some Protists, and some Bacteria

13. Why do we balance the photosynthesis equation?

• A Because it looks nicer
• B Because scientists like working with numbers
• C Because coefficients are much better than subscripts
• D Because matter cannot be created nor destroyed and an equation needs to show that.