Question

The hollow roots which come above the ground for exchange of gases are calles

Answer 1

Answer:

pneumatophores

In such plants, many roots come out vertically above the ground. These are hollow roots and are called pneumatophores. They facilitate exchange of gases in the roots . ex :MANGROVES OR MARSHY AREA PLANTS

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Answer 2

Answer: Pneumatophores

Explanation: Pneumatophores are aerial roots which come above the gound for exchange of gases. Generally it is present in mangroves and swampy areas or near the marshy areas where underground waterlogging is there so exchange of gases didn't take place smoothly. Moreover, it is an adaptation of a root to these plants.