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5 Cards in this Set

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7.3.1 (Core)
Geotropism & Phototropism (Definition)
Geotropism: A response in which a plant grows toward or away from gravity.

Phototropism: A response in which a plant grows toward or away from light.
7.3.2 (Extended)
Auxins (and their effects)
Auxin: Plant hormone, stimulates growth. Cells on the shaded side of a plant receive more auxins, stimulating that side to grow and bend toward the light.
7.4.1 (Core)
Homeostasis (Definition)
Homeostasis: The maintenance of a constant internal environment.
7.4.3 (Core)
Maintenance of constant body temperature
Fat insulates against heat.
Sweat cools the body by convection.
Vasodilation + Vasoconstriction controls blood flow to the capillaries, Vasodilation allows more blood to flow, allowing heat to radiate from the skin, Vasodilation decreases blood flow and radiation.
7.4.4 (Extended)
Negative Feedback
Negative Feedback: ensures the reversion of changes and return to a set level in control systems. ie the control of the body temperature