PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Xylem
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Phloem
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Either A or B
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None of the above
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Detailed explanation-1: -In plants, absorption of water and minerals is an organic procedure in which the plants take up capillary water from the soil to the root xylem via the root hairs throughout different plant procedures such as transpiration, osmosis, and respiration.
Detailed explanation-2: -Transpiration of water molecules from the cells of a leaf creates a suction which pulls water from the xylem cells of roots. Specially, during the day, when the stomata are open, the transpiration pull becomes the major driving force in the movement of water in the xylem.
Detailed explanation-3: -Xylem transports water, minerals, and nutrients from the soil to all the plant parts. There are two types of “transport” tissues in plants-xylem and phloem. Water and solutes are transported by the xylem from the roots to the leaves, and food is transported from the leaves to the rest of the plant by the phloem.
Detailed explanation-4: -In plants, the water and minerals are first absorbed by the roots and then it is absorbed but the two vascular tissues namely xylem and phloem. After absorbing water and minerals, by these tissues then it is transported to all parts of plants such as stem, leaves, etc.
Detailed explanation-5: -Transpiration is the loss of water from the plant through evaporation at the leaf surface. It is the main driver of water movement in the xylem. Transpiration is caused by the evaporation of water at the leaf, or atmosphere interface; it creates negative pressure (tension) equivalent to –2 MPa at the leaf surface.