1. Photosynthesis takes place in the root.
- A. False
2. Tomatoes in a greenhouse grow faster if the carbon dioxide concentration is increased. Why is that?
- A. Carbon dioxide concentration must have been a limiting factor earlier.
3. What is the equation of photosynthesis?
- A. Carbon dioxide + water → glucose + oxygen
4. What is the law of conservation of mass in a chemical reaction?
- A. Matter is neither created nor destroyed, only transformed.
5. What is the primary function of the ozone layer in the Earth’s atmosphere?
- A. To absorb and scatter solar ultraviolet light
6. What is the substance that makes leaves look green?
- A. Chlorophyll
7. What is the waste by-product of photosynthesis?
- A. Oxygen
8. What type of energy is required for photosynthesis to happen?
- A. Light
9. Where does photosynthesis take place in?
- A. Chloroplasts
10. Which gas is needed for photosynthesis?
- A. Carbon dioxide
11. Why do plants need nitrate ions?
- A. To make proteins
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