Question

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. Stomatas have closed.
• C. The water potential of the cells has increased.
• D. There is less support provided by the xylem.

Answer 1

The correct option is A

More water is lost by transpiration than is absorbed.

More water is lost by transpiration than is absorbed. This causes wilting in the plant. The guard cells of stomata tend to lose their structure, resulting in the opening of stomatal pore for longer duration which further results in the loss of more water.