A plant is left in the hot sun for six hours

CBSE Class 11 CBSE Class 11 Biology
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1

A plant is left in the hot sun for six hours.

The diagram shows how the appearance of the plant changes during this time. Which statement explains the change in appearance of the plant?
A-More water is lost by transpiration than is absorbed.
B-Stomata have closed.
C-The water potential 6f the cells has increased.
D-There is less support provided by the xylem.

2

A- The diagram illustrates the process of wilting, i.e., more water is lost hy transpiration.
The plant was subjected to high heat and light conditions that resulted in it losing more water than it can absorb from the soil. When the water evaporated is not replaced by water absorbed by the roots at the same rate, the tissue becomes flaccid and the leaves wilt.