Lesson 4 Quiz-Structure and Function

1. What term is used to describe organisms that make their own food?

• a) Herbivores
• b) Autotrophs
• c) Carnivores
• d) Omnivores

2. What do autotrophs primarily use to convert light energy into chemical energy?

• a) Chloroplasts
• b) Thermal energy
• c) Nutrients from the soil
• d) Gaseous elements

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3. Where does the energy come from that helps plants to perform photosynthesis?

• a) Water
• b) Soil nutrients
• c) Sunlight
• d) Oxygen

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4. What do plants mainly release as a byproduct of photosynthesis?

• a) Oxygen
• b) Carbon dioxide
• c) Nitrogen
• d) Water

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5. What happens to sugar once it is made by the plant?

• a) It is stored as minerals in the soil.
• b) It evaporates into the air.
• c) It turns into water.
• d) It is used by the plant or transported to other parts of the plant.

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NGSS.MS-LS1-6

6. Where does photosynthesis primarily take place in a plant?

• a) Leaves
• b) Roots
• c) Stems
• d) Flowers

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7. How are carbon dioxide and oxygen involved in photosynthesis?

• a) Plants only use oxygen for photosynthesis.
• b) Plants release carbon dioxide and take in oxygen.
• c) Plants take in carbon dioxide and release oxygen.
• d) Carbon dioxide and oxygen are not related to photosynthesis.

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8. How do plants obtain water needed for photosynthesis?

• a) Through sunlight
• b) Through their leaves
• c) From the air
• d) Through their roots

9. What is the function of stomata in a plant?

• a) To allow gases to enter and exit
• b) To store food for growth
• c) To release water into the soil
• d) To protect the plant from insects

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10. What does the term transpiration refer to?

• a) The capture of sunlight by chloroplasts
• b) The transfer of sugars from leaves to stems
• c) The process of water vapor escaping from the plant through stomata
• d) The absorption of carbon dioxide from the soil