Question

Type of movement shown by hydra

Answer 1

Answer:

Explanation:

Hydra is a coelenterate and is a polyp.

They are usually sessile and remain attached to the surface.

Hydra doesn't do locomotion but it has tentacles which help them to catch prey for the Food.

They also have radial symmetry which help them to locate in all directions inspite of the fact that they can't move.

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Answer 2

Answer:

• Hydra has a tubular body that is radially symmetrical. A mouth opening surrounded by tentacles is located at the free end of the body.
• Hydra's body is diploblastic. When a Hydra is attacked, the tentacles retract into small buds as a reflex, and the body retracts into a gelatinous sphere.
• Hydra are mostly sedentary, but they move when hunting. They move in two different ways: looping and somersaulting.
• They bend over and attach themselves to the substrate with their mouth and tentacles, then relocate their foot, resulting in the usual movement.
• Somersaulting causes the body to bend over and attach itself to a new location using its foot. The Hydra advances in this coordinated manner.
• Hydra can also move as an amoeboid or by detaching from the substrate and flowing with the current. By budding, they reproduce asexually.
• The buds form on the hydra's body, then mature, detach from the parent body, and grow independently.
• Sexual reproduction occurs in some Hydra when conditions are harsh, often before winter or in poor feeding conditions.

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