LABORATORY REVIEW
TRANSPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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high relative humidity
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high proportion of atmospheric carbon dioxide
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high light intensity
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high levels of hormone alsisic acid
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Detailed explanation-1: -Water stress, high temperatures, and high carbon dioxide concentration causes stomata to close.
Detailed explanation-2: -Plants close stomata in response to their environment; for example, most plants close their stomata at night. Under drought, plants may also close their stomata to limit the amount of water that evaporates from their leaves.
Detailed explanation-3: -As light intensity increases, the rate of transpiration increases because stomata are open in the light.
Detailed explanation-4: -Stomata open in response to light, including blue and red light (Shimazaki et al., 2007). Red light induces stomatal opening via photosynthesis in the mesophyll and guard cell chloroplasts (Mott et al., 2008; Suetsugu et al., 2014).
Detailed explanation-5: -Light intensity: The transpiration rate is increased due to the increase in light intensity. During daytime in the sunlight, the rate of transpiration is faster. This is because the stomata remains open to allow the inward diffusion of carbon dioxide for photosynthesis.