EMBRYOLOGY
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The days become colder and leaves start to fall off of the trees. Leaves falling off of the trees is a ____
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stimulus
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response
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Winter temperatures cause the production of auxin to slow down and this breaks the abscission layer, causing the leaves to detach from the trees. Losing leaves helps the tree to retain water during in the winter and means that it needs less energy to stay alive.
Detailed explanation-2: -In temperate regions of the world, autumn is marked by the brightly colored foliage that slowly drops from trees and shrubs to carpet the ground. But why do some plants shed their leaves before winter? It turns out autumnal leaf drop is a form of self-protection.
There is 1 question to complete.