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Rate of transpiration in a dorsiventral leaf is
- a)Greater at the upper surface
- b)Greater at the lower surface
- c)Equal at both the surfaces
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
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Rate of transpiration in a dorsiventral leaf isa)Greater at the upper ...
Two equal pieces of cobalt chloride paper are dried and placed one on the upper surface and the other on the lower surface of dorsiventral leaves. They are firmly held in place by pieces of cellotapes or glass slides. After a few minutes the cohalt chloride paper shows change in colour from blue to pink. The time taken for the cobalt chloride paper on the upper surface of the leaf to turn pink is much longer than for the under surface. Thus, it proves that the rate of transpiration is greater from the under surface of dorsiventral leaves.
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Rate of transpiration in a dorsiventral leaf isa)Greater at the upper ...
Rate of transpiration in a dorsiventral leaf is greater at the lower surface, as the leaves have higher number of stomata on the lower surface than in the upper surface. If stomata is higher on the upper surface, the rate of transpiration would be much higher and will result in huge water loss which might will damage the plant.
Also, upper surface of the leaf is the major contributor for photosynthesis using tightly packed palisade cells. Presence of stomata in the upper surface may reduce the efficiency of photosynthesis.
So the correct option is "Greater at the lower surface"
Also, upper surface of the leaf is the major contributor for photosynthesis using tightly packed palisade cells. Presence of stomata in the upper surface may reduce the efficiency of photosynthesis.
So the correct option is "Greater at the lower surface"
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Rate of transpiration in a dorsiventral leaf isa)Greater at the upper ...
Rate of transpiration in a dorsiventral leaf is greater at the lower surface, as the leaves have higher number of stomata on the lower surface than in the upper surface. If stomata is higher on the upper surface, the rate of transpiration would be much higher and will result in huge water loss which might will damage the plant.
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Rate of transpiration in a dorsiventral leaf isa)Greater at the upper surfaceb)Greater at the lower surfacec)Equal at both the surfacesd)None of the aboveCorrect answer is option 'B'. Can you explain this answer?
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