HORTICULTURE SCIENCE
PLANT BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Abscission allows a plant to withdraw essential minerals
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Deciduous plants have a longer period for photosynthesis
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Leaf tissues would likely die of extreme desiccation in winter
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Secondary pigments are exposed to higher light intensity
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Detailed explanation-1: -There are several reasons why deciduous trees lose their leaves: It means the tree spends less energy through the harsh winter. It conserves moisture within the trunk and keeps it from drying out. It allows wind to blow through the branches, putting less strain on the tree – a serious concern in winter storms and gales.
Detailed explanation-2: -The leaves of the deciduous trees have a tendency to lose water. But during the dry season, water is scarce. Hence, deciduous trees shed their leaves to prevent water loss.
Detailed explanation-3: -Hypotheses based on the fossil record posit that deciduousness evolved first in response to drought or darkness and preadapted certain lineages as cold climates spread. An alternative is that evergreens first established in freezing environments and later evolved the deciduous habit.