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8 Cards in this Set
- Front
- Back
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Adpatations |
- features of an animal that increase the chances of survival under a certain environmental condition - arise by evolution and natural selection - features that are an advantage ensure survival and reproduction passing the trait struton |
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Structural Adaptations |
- part of the whole body structure, shape, covering - plants: sunken stromata, rolled leaves, waxy cuticle - animals: skin, blubber, fat, quills on echidna |
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Physiological Adaptations |
- organ or system organisation, biochemistry - plants: antifreeze, salt gland excretion - animals: venom, sweat, vasodilation, chrimatophores |
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Behavioural Adaptations |
- specific behaviours that infer an advantage - e.g wallowing, huddling, migrating, migrating, construction |
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Adaptations to cold |
- if cells freeze, ice fractures cell membrane - antifreeze is sometimes produced in beginning of freezing season by some fish or turtles or insects - antifreeze lowers the freezing point of water |
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Countercurrent exchange system |
- Veins and arteries that supply limbs are paired - heat from arteries is transferred to veins |
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Tarpor |
- lower metabolic rate |
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Pygmy possum |
- endotherm, lives in alpine conditions - behavioural: packs a pantry of seeds for cold season - physiological: enters a state of torpor (hibernation) dropping its body temp to 6 degrees - structural: thick fur |
