SCIENCE
BOTANY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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False
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True
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Either A or B
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None of the above
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Detailed explanation-1: -They keep shedding some leaves throughout the year. Such plants are called evergreen trees.
Detailed explanation-2: -In autumn, with the cooler temperatures and shorter days, the production of one hormone called auxin reduces. This in turn puts a strain on the abscission layer and causes the bond between leaf and branch to weaken. Eventually, the strength of the join is weakened enough that the wind will blow the leaf away.
Detailed explanation-3: -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.
Detailed explanation-4: -The needles also photosynthesise more slowly, but keep doing so all year round. Trees found in Tropical rainforests are also evergreen as the warm and moist climate all year round means there is no need for them to lose all of their leaves at once.