In an experiment, four freshly plucked leaves (A-D) of a plant, such as those of china – rose, were treated as follows:

Question

In an experiment, four freshly plucked leaves (A-D) of a plant, such as those of china – rose, were treated as follows:

In an experiment, four freshly plucked leaves (A-D) of a plant, such as those of china – rose, were treated as follows:

(a) Coated with Vaseline on its upper surface.

(b) coated on the lower surface.

(c) coated on both surface

(d) left uncoated.

All the four leaves A, B, C & D were left in a room for about 24 hours.

(i) which leaf would become most limp? Why?

(ii) which leaf would show least limping? Why?

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

(i) The leaf D would become most limp. This is because water would be lost through transpiration from upper as well as the lower surface of leaf D since it is uncoated.

(ii) The least limping would be shown by leaf C since its upper and lower surfaces have been coated with vaseline. So no water is lost from the leaf through transpiration since the stomatal openings get blocked by vaseline.