Question

write amazing facts about hydra ​

Answer 1

HYDRA: INTERESTING FACTS

The tentacles that form a ring around the mouth/anus are covered with stinging cells called nematocysts. These stinging cells can inject toxins upon contact, and are often used for prey capture, defence, and sometimes locomotion.

The Hydras nematocysts are harmless to humans. Nematocysts can only be used once, but are usually replaced within 48 hours

Hydras are generally sessile, but they can detach and move to another location by gliding slowly on their base. Sometimes they somersault, float, or use their tentacles to move along. When anchored, they can also stretch and contract their bodies and bend them from side to side.

Hydras have excellent powers of regeneration after injury. If cut into several sections, a new Hydra will generate from each piece.

The mouth is the only opening to the body cavity, and therefore also acts as the organism's anus.

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Answer 2

Hydras are generally sessile but they can detach to move to another location by gliding slowly on their base.