Keratin
Bark, cuticle prevents water loss from softer/ herbaceous parts of the plant
Cuticle being impervious to water prevents water loss
The integumentary system (skin) blocks the entrance of pathogens and prevents the loss of water.
Drink a lot of water
A waxy layer called the cuticle prevents water loss in leaves.
Skin, or the integumentary system, acts as a protective covering that prevents the entry of harmful substances and organs, and prevents extreme water loss.
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No, fat associated with skin prevents heat loss. Keratin and sebum associated with skin prevent water loss.
The spikes of a cactus prevents a herbivore from eating it as well prevents water loss through transpiration.
Prevents water loss so they do not dehydrate
This is called the integumentary system.