Differences between coordination of the humans eye's internal response to light and that of tropic movement of the flowering plant in response to light

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Explanation:

Light falling in the human eye is coordinatedby pupil. The amount of light entering the eyeis controlled by a reflex action. The size of the pupil changes in response to bright or dim light. ... In plant shoots, the role of auxin is to cause a positive phototropism, i.e. to grow the plant towards the light.

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correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.