7th Grade Science Cycles of matter and energy Review

Green plants capture and store light energy from the sun through the process of –

• cell division

• respiration

• homeostasis

• photosynthesis

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Plants do photosynthesis to

• convert radiant energy into chemical energy

• Change carbohydrates into proteins

• Release carbon dioxide into the atmosphere

• Capture oxygen from water molecules

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After photosynthesis what form does the chemical energy take?

• water

• oxygen

• glucose

• carbon dioxide

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1. What gas do plants release as by-product of photosynthesis?

• nitrogen

• oxygen

• water

• carbon dioxide

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The Sun contributes to photosynthesis by providing plants with –

• Oxygen atoms

• Chemical energy

• Gravitational force

• Radiant energy

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What form of the Sun’s energy do plants utilize?

• heat energy

• Light energy

• electrical energy

• chemical energy

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The component that is NOT used in photosynthesis is:

• carbon dioxide

• glucose

• water

• sunlight

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Which of the following materials are products of photosynthesis?

• Glucose, starch and oxygen

• Glucose and oxygen

• Glucose, carbon dioxide and water

• Glucose, water and oxygen

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Where does photosynthesis mostly occur?

• roots

• stems

• leaves

• flowers

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Which of the following is NOT a primary consumer

• bear

• cow

• vulture

• tortoise

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