how does a hydra move?
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Answer:
A hydra moves by many methods like swimming, walking, looping and somersaulting. In all methods the tentacles are used. By using the tentacles they swim and walk but in looping and somersaulting they use tentacles and basal disc both.
Looping:
In this method, an erect hydra bends its tentacles to grip and then forms a loop by pulling the basal disc. Now the hydra becomes erect again. This method is used for short distance locomotion.
Somersaulting:
In this method an erect hydra bends its tentacles part and becomes inverted. Then by bending its basal disc part it becomes erect again. Hydra uses this method for long distance locomotion.
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Answer:
Hydra moves by the following methods :-
Looping
The Hydra stretches itself and then pulls itself erect .
This way the hydra moves .
Somersaulting
The hydra somersaults and moves .
It stretches itself similar to looping then it somersaults .
This is another method of hydra .
Climbing
The hydra moves by climbing objects .
Swimming
The hydra can swim with the help of its tentacles .
Explanation:
Hydra belongs to the class Hydrozoa .The creature contains several structures called tentacles .The Hydra obtains its nutrition through stinging cells called cnidocysts . The cnidocysts have nematocysts .
The Hydra is an invertebrate as it does not have any vertebra . The Hydra has a basal disc at its base .It has a cylindrical structure . The hydra shows locomotion by somersaulting . The mouth of the Hydra serves as an organ for excretion of undigested food .