LABORATORY REVIEW
TRANSPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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plant with large leaves carry more water
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plants with large leaves have more stomata in their lower surface
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plants with large leaves have more stomata per unit area
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plants with large leaves blow readily in the wind
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Detailed explanation-1: -More leaves (or spines, or other photosynthesizing organs) means a bigger surface area and more stomata for gaseous exchange. This will result in greater water loss. More stomata will provide more pores for transpiration. A leaf with a bigger surface area will transpire faster than a leaf with a smaller surface area.
Detailed explanation-2: -The wider the leaf area, the greater the rate of transpiration because wide leaves tend to have more stomata [5].
Detailed explanation-3: -Leaf size increases transpiration. Transpiration is evaporation of water through openings in the leaves called stomata. The larger the surface area of the leaf, the more stomata the leaf will have. Increased numbers of stomata allow for increased loss of water and thus increased transpiration.
Detailed explanation-4: -Stomata are more numerous on the lower side of the leaf to prevent transpiration. Transpiration is the loss of water through stomata, so, more stomata are found on the lower surface to prevent excessive loss of water.
Detailed explanation-5: -Temperature Plants transpire more rapidly at higher temperatures because water evaporates more rapidly as the temperature rises. At 30°C, a leaf may transpire three times as fast as it does at 20°C.