The following diagram is of a cross section of a plant leaf. Use the diagram to answer the question.

The main function associated with structure X is ________.
A) absorption of carbon dioxide
B) retention of water
C) collection of light
D) release of carbon dioxide

Question

The following diagram is of a cross section of a plant leaf. Use the diagram to answer the question.

The main function associated with structure X is ________.
A) absorption of carbon dioxide 
B) retention of water 
C) collection of light 
D) release of carbon dioxide

Quizplus · Accepted Answer

Structure X is the cuticle, which is a waxy layer that covers the leaf and helps to prevent water loss through transpiration, thus retaining water.

The Following Diagram Is of a Cross Section of a Plant