PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Have a waxy layer on the leaves to stop transpiration
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Store water in the petals
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Have leaves spread out
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Have no roots
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Detailed explanation-1: -Plants called desert succulents are a good example of plants that have drought avoidance strategies [2]. Desert succulents have thick fleshy leaves, which often don’t resemble leaves at all, and they have a thick waxy layer to prevent water loss.
Detailed explanation-2: -Adaptations to Reduce Water Loss Leaves are sometimes reduced to spines. The thick cuticle on leaves reduces water loss. Some plants have stomata only on the lower side. Some of the plants have sunken stomata to reduce water loss.
Detailed explanation-3: -Adaptation such as spines, thick cuticles, and sunken stomata helps the plant to reduce the rate of transpiration.
Detailed explanation-4: -Thick waxy cuticle: The cuticle cuts down water loss in two ways: it acts as a barrier to evaporation and also the shiny surface reflects heat and so lowers temperature. Sunken stomata: Stomata may be sunk in pits in the epidermis; moist air trapped here lengthens the diffusion pathway and reduces evaporation rate.