PLANTS
TRANSPORT IN PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Guard cells open the roots to absorb water.
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Guard cells are bean shaped cells that line the openingof the phloem.
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Guard cells are bean shaped cells that line the openingof the xylem.
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Guard cells are bean shaped cells that line the openingof the stomata and open and close the stoma.
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Detailed explanation-1: -Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata. Light is the main trigger for the opening or closing. Each guard cell has a relatively thick cuticle on the pore-side and a thin one opposite it.
Detailed explanation-2: -In plants, gases are exchanged through small openings called stomata which are present mostly on the lower surface of leaves and on green stems. Each stoma has two bean-shaped cells called guard cells.
Detailed explanation-3: -Guard cells are kidney shaped cells that surrounds the stomata. They control the opening and closing of the stomata. When the plant has an excess of water, the guard cells swell and create an opening for the exchange of gases.
Detailed explanation-4: -Guard cells optimise leaf gas exchange in response to changing environmental conditions and their turgor is controlled by alterations in atmospheric CO2 concentration, light intensity, humidity and the drought hormone abscisic acid.
Detailed explanation-5: -What are the Guard Cells? Two bean-shaped cells surrounding a stoma are called Guard Cells. They play a crucial role during the process of photosynthesis.