Question

What is hydra?What is the function of hydra?​

Answer 1

A structure called a basal disc on the bottom of the tube-like body secretes a sticky substance which helps hydras to attach themselves to a solid base. Hydras move their bodies about in the water while they are attached, extending and contracting by a mixture of muscle movement and water (hydraulic) pressure.

Answer 2

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Hydra is a genus of small, fresh-water organisms of the phylum Cnidaria and class Hydrozoa.

Hydra species are the most thoroughly used cnidarian for studying important biological concepts. There is a large body of literature pertaining to Hydra, and the scientific use of these organisms has undoubtedly advanced several aspects of research globally.

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