Chapter 3: What Plants Need

What is the purpose of sunlight for plants?

• To make glucose

• To absorb water

• To release oxygen

• To prevent erosion

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How do plants absorb water?

• Through their leaves

• Through their stems

• Through their flowers

• Through their roots

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What is the process called when plants release water vapor through tiny openings in their leaves?

• Evaporation

• Transpiration

• Hydroponics

• Erosion

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What is the purpose of the microscopic holes in plant leaves?

• To absorb sunlight

• To release oxygen

• To prevent erosion

• To take in carbon dioxide

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What did Jan van Helmont's plant investigation show?

• Plants increase in weight by consuming soil

• Plants increase in weight by absorbing sunlight

• Plants increase in weight by taking in air

• Plants increase in weight by absorbing water

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What is hydroponics?

• Growing plants without sunlight

• Growing plants without water

• Growing plants without soil

• Growing plants without air

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What is the main purpose of plants in the ecosystem?

• To provide materials

• To provide medicine

• To prevent erosion

• To provide oxygen

What is the source of the chemical used in aspirin?

• Lemon and mint

• Tree bark

• Cotton

• Willow tree

What is the purpose of roots in plants?

• To absorb sunlight

• To release oxygen

• To prevent erosion

• To absorb water

What is the purpose of leaves in plants?

• To absorb sunlight

• To release oxygen

• To prevent erosion

• To absorb water

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NGSS.MS-LS1-6

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