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Plant and animal responses
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actogram: the activity/ time graph of an organism
auxin: a plant hormone that lengthens cells
biological clock: a timing mechanism in living things that is genetically determined
circadian: a rhythm of about 24 hours
diurnal: active during the day
endogenous: an internal rhythm that occurs when there are no external cues. It is caused by a biological clock
entrainment: forcing the free running period to follow an external pattern
hibernation: period of inactivity to survive adverse (usually cold) conditions by lowering the metabolic rate
hierarchy: when animals are ranked
homing: the ability to find and return to the home site
kineses: orientation movement of an animals in which the stimulus governs the rate, but not he direction of movement
long day plant: a plant that flowers when day length exceeds a certain minimum value
migration: regular mass movement of members of a species from a place where they breed to another place where they usually feed and then back again
nocturnal: active mainly at night
receptors: a cell or organ able to detect changes in the environment
stimulus: changes in an organism's surroundings to which it can respond
tropism: plant movements which occur by growth,and in which the direction of the response depends on the direction of the stimulus
zeitgeber: external environmental cue by which an internal clock is reset
Plant and animal responses
Across:2. | active mainly at night | 4. | an internal rhythm that occurs when there are no external cues. It is caused by a biological clock | 5. | a plant hormone that lengthens cells | 6. | the ability to find and return to the home site |
| 10. | a cell or organ able to detect changes in the environment | 13. | period of inactivity to survive adverse (usually cold) conditions by lowering the metabolic rate | 16. | active during the day | 17. | when animals are ranked |
| | Down:1. | a timing mechanism in living things that is genetically determined | 3. | a plant that flowers when day length exceeds a certain minimum value | 4. | forcing the free running period to follow an external pattern | 7. | regular mass movement of members of a species from a place where they breed to another place where they usually feed and then back again | 8. | the activity/ time graph of an organism |
| 9. | plant movements which occur by growth,and in which the direction of the response depends on the direction of the stimulus | 11. | changes in an organism's surroundings to which it can respond | 12. | external environmental cue by which an internal clock is reset | 14. | a rhythm of about 24 hours | 15. | orientation movement of an animals in which the stimulus governs the rate, but not he direction of movement |
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© 2014
PuzzleFast.com, Noncommercial Use Only
Plant and animal responses
Across:2. | active mainly at night | 4. | an internal rhythm that occurs when there are no external cues. It is caused by a biological clock | 5. | a plant hormone that lengthens cells | 6. | the ability to find and return to the home site |
| 10. | a cell or organ able to detect changes in the environment | 13. | period of inactivity to survive adverse (usually cold) conditions by lowering the metabolic rate | 16. | active during the day | 17. | when animals are ranked |
| | Down:1. | a timing mechanism in living things that is genetically determined | 3. | a plant that flowers when day length exceeds a certain minimum value | 4. | forcing the free running period to follow an external pattern | 7. | regular mass movement of members of a species from a place where they breed to another place where they usually feed and then back again | 8. | the activity/ time graph of an organism |
| 9. | plant movements which occur by growth,and in which the direction of the response depends on the direction of the stimulus | 11. | changes in an organism's surroundings to which it can respond | 12. | external environmental cue by which an internal clock is reset | 14. | a rhythm of about 24 hours | 15. | orientation movement of an animals in which the stimulus governs the rate, but not he direction of movement |
| |
© 2014
PuzzleFast.com, Noncommercial Use Only