SMS Ch. 11 Plant Processes
About this set
Created by:
simle_science on December 2, 2009
Subjects:
photosynthesis, respiration, phototropism, gravitropism, photoperiodism
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18 terms
Terms | Definitions |
|---|---|
 tropism | response of a plant to a stimulus |
| photoperiodism | flowering response to changes in the length of day |
| photosynthesis | process that uses light energy to make food |
| stimulus | anything that causes a change in behavior |
| auxin | plant hormone that accumulates on the shaded side of a stem |
| day-neutral plants | plants that flower over a wide range of light conditions |
| short-day plants | plants that require long nights to flower |
| pigments | chemical substances that absorb or reflect light energy |
| chlorophyll | pigment that traps energy from sunlight |
| respiration | process that breaks down food to release energy |
| gravitropism | plant response to the effects of gravity |
| positive tropism | growth toward a stimulus |
| negative tropism | growth away from a stimulus |
| ethylene gas | stimulates the ripening of fruit |
| abscisic acid | plant hormone that promotes dormancy and closes stomata |
| long-day plants | require less than 12 hours of darkness to flower |
| carbon dioxide | used during photosynthesis and released during respiration |
| oxygen | used during respiration and released during photosynthesis |
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