Answer :
Answer:
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Explanation:
d. Velamen
Velamen is a specialized outer covering found on the roots of many epiphytic orchids and some other epiphytic plants. It acts as a protective layer against desiccation and helps in absorbing moisture and nutrients from the air and rainwater in their environment. This adaptation is crucial for epiphytic plants that grow on other plants (rather than in soil) where water availability can be variable. So, velamen serves an important function in the survival and growth of epiphytic plants in their natural habitats.
