PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Move sucrose from the leaves to the roots.
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Create new proteins for the plant.
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Pull up new water and mineral ions from the roots to the leaves.
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Grow towards the light.
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Detailed explanation-1: -If there is no transpiration, no water will move up the plant via transpiration pull. The leaves wont get water and the process of photosynthesis will not occur and the plant will eventually die.
Detailed explanation-2: -Transpiration is the loss of water in the form of vapour through aerial parts of the plant. This creates a suctional force pulling water from the roots through the xylem. Transpiration helps to pull water to the leaves of tall trees that are even 600ft high.
Detailed explanation-3: -As transpiration occurs, it deepens the meniscus of water in the leaf, creating negative pressure (also called tension or suction). The tension created by transpiration “pulls” water in the plant xylem, drawing the water upward in much the same way that you draw water upward when you suck on a straw.
Detailed explanation-4: -Transpiration is a process that involves loss of water vapour through the stomata of plants. The loss of water vapour from the plant cools the plant down when the weather is very hot, and water from the stem and roots moves upwards or is ‘pulled’ into the leaves.