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24 Cards in this Set
- Front
- Back
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What is a chemical reaction that breaks down sugar molecules and produces water, carbon dioxide, and energy?
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respiration
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What plant process uses sunlight to produce sugar molecules?
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photosynthesis
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What is a plant's response to the amount of light it receives daily?
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photoperiodism
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What controls changes in growth?
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plant hormone
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What are responses of a plant to external stimuli?
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tropism
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What kind of plants have no specific photoperiod?
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day-neutral plants
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What kind of plants need 12 or more hours of darkness?
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short-day plant
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What kind of plants require less than 10-12 hours of darkness?
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long-day plants
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How does carbon dioxide enter plants?
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Through the stomata
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What affect the opening and closing of stomata?
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light, water, and carbon dioxide
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What is the plant hormone causes the stomata to close and helps plants respond to water loss?
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gibberellin
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Leaves change colors because what substance breaks down?
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chlorophyll
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Light energy for the plant to use in making its food is trapped by this and leaves change colors because this substance breaks down?
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chlorophyll
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What is the type of growth response having to do with light?
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photoperiodism
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What causes fruit to ripen?
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Ethylene gas
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What reaction in the food-making process of plants does not require sunlight?
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light-independent
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What are the products of photosynthesis?
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glucose and oxygen
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What are the plant substances that affect plant growth called?
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hormones
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What is a product of respiration?
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CO2
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What is a plant's response to gravity called?
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gravitropism
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What is the relationship between plant hormones and tropism?
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Plant hormones are responsible for some tropisms.
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What can you do to help pares ripen more rapidly?
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Put them in a bag that will hold in ethylene.
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What is the chemical equation for photosynthesis?
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.
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What is the chemical equation for respiration?
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.
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