HORTICULTURE SCIENCE
PLANT BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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during the day if a plant has too little water.
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at night if a plant has enough water.
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at night if a plant has too little water.
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during the day if a plant has enough water.
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Detailed explanation-1: -When there is plenty of water and sunlight for photosynthesis to occur, the stomata will open. Water can also be evaporated out of the plant through these stomata. This is called transpiration.
Detailed explanation-2: -Stomata are mouth-like cellular complexes at the epidermis that regulate gas transfer between plants and atmosphere. In leaves, they typically open during the day to favor CO2 diffusion when light is available for photosynthesis, and close at night to limit transpiration and save water.
Detailed explanation-3: -They aid in the flow of gases between the atmosphere and plants. Guard cells regulate the opening and closing of stomatal holes, which are controlled by the process called osmosis. The entry of water into the stomata makes guard cells swell which leads to the opening of the stomata.
Detailed explanation-4: -Stomata are pores on the leaf surface, which are formed by a pair of curved, tubular guard cells; an increase in turgor pressure deforms the guard cells, resulting in the opening of the stomata.