PLANTS
TRANSPORT IN PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sugars are made by photosynthesis faster than water is lost by transpiration
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Sugar move down the phloem faster than water is absorbed through root hair cells
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Water is lost by transpiration faster than water is absorbed by root hair cells.
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Water moves up the xylem faster that sugars move down the phloem
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Detailed explanation-1: -So why do plants wilt? Usually because they are thirsty! Many nonwoody plants rely almost exclusively on water pressure, or turgor, within their cells to keep them erect. However, plants are constantly losing water through small openings in their leaves (called stomata) in a process known as transpiration.
Detailed explanation-2: -The plant can exert strong control over the rate of water loss through varying stomatal apertures. When plant roots can no longer absorb enough water to satisfy transpiration from its leaves, it begins to dehydrate.
Detailed explanation-3: -Transpiration is part of the water cycle. It is the loss of water vapour from parts of a plant. The process explains how water is absorbed by a plant’s root hair cells down a concentration gradient.
Detailed explanation-4: -Transpiration is a process that involves the 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.
Detailed explanation-5: -Q2) How does transpiration help the roots absorb water and minerals from the soil? Answer: Solution: Transpiration process in plants creates a suction pressure which pulls up water from the xylem of the roots to the stem and then to the leaves.