IMMUNOGLOBULINS
CLASSICAL ALTERNATE AND LECTIN PATHWAYS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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to avoid water loss
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to avoid oxygen loss
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to replenish lost CO2
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None of the above
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Detailed explanation-1: -Water loss through transpiration can be reduced by closing the stomata in the leaves using a substance called ABA. When the stomata is closed photosynthesis will decrease because no CO2 can enter through the closed stomata. Less photosynthesis means less energy is produced by the plant and the plant stops growing.
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: -During drought, trees reduce water loss and hydraulic failure by closing their stomata, which also limits photosynthesis.
Detailed explanation-4: -A particular robust response is the regulation of stomata on leaves, pores through which gas exchange takes place. By closing the stomata, plants can conserve water during periods of drought by reducing loss through evaporation.