The epidermis is thicker in plants living in dry habitats because protection against water loss is critical in such environments.
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The epidermis tends to be thicker in plants living in dry habitats as a adaptation to reduce water loss. A thicker epidermis provides an additional barrier to transpiration, helping the plant retain moisture more effectively. This adaptation is crucial for plants in arid environments where water availability is limited, helping them survive prolonged periods of drought by minimizing water loss through the leaf surfaces.