The diagram given below represents an experimental set up to demonstrate a vital process.
Study the diagram and answer the questions that follow.
After 24 hours
a) Name the process that is being demonstrated in the above set up.
b) What change do you observe after 24 hours after setting up the experiment? Why?
c) What can you conclude from the above experiment?
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(i) Transpiration
(ii) Two cobalt chloride papers are attached, one on the dorsal and the other on the ventral surface of a dorsiventral leaf with the help of glass slide and clips. The set up is left in the open for few hours.
(iii) To show that more transpiration occurs from the ventral surface of a dicot leaf.
(iv) After an hour, the cobalt chloride paper placed on the ventral surface turns blue to pink faster than the one on the upper surface as the number of stomata are more on the ventral surface, so more transpiration takes place from the lower surface.
(v) 1. Cuticle becomes thick
2. Leaves become narrow
3. Stomata covered by hair-like structures
Explanation:
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