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Multiple Choice
If the layers of the cuticle are very close together, which of the following is most likely to occur?
A
The permeability of the cuticle to water decreases.
B
The cuticle becomes more susceptible to enzymatic degradation.
C
The cuticle allows more rapid diffusion of solutes.
D
The cuticle becomes more flexible and allows more gas exchange.
Verified step by step guidance
1
Understand the function of the cuticle: The cuticle is a protective layer found on the surface of plants, insects, and other organisms. In plants, it primarily serves to reduce water loss and protect against environmental stressors. Its permeability to water and solutes is influenced by its structure.
Analyze the structural arrangement: If the layers of the cuticle are very close together, this creates a denser and more compact structure. A denser cuticle typically reduces the spaces through which water and solutes can pass, thereby decreasing permeability.
Consider the impact on water permeability: A tightly packed cuticle reduces the ability of water molecules to diffuse through it. This is because the compact arrangement limits the pathways available for water movement.
Evaluate the other options: A denser cuticle does not necessarily make it more susceptible to enzymatic degradation, nor does it allow more rapid diffusion of solutes or increase flexibility for gas exchange. These outcomes are less likely given the structural changes described.
Conclude the most likely outcome: Based on the structural changes, the most probable result of closely packed cuticle layers is a decrease in permeability to water, as the compact arrangement restricts water movement.