Question

$\huge\underline\mathbb\red{QUESTION}$
Describe the structures and functions of echinodermata.​

Answer 1

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$\huge\red{\bold{Echinodermata}}$

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~ In Echinodermata, the side of the body where the mouth is located is referred to as the oral surface.

~ There exterior is dotted with short spines, pincerlike pedicellariae, and skin gills.

Sensory tentacles

Tube feet

Spine

Pedicellaria

Sensory tentacles

Spine

Tube feet

Digestive glands

Radial canal n

Digestive glands

Radial canal

# these are exclusive Marine animal.

# they are triploblastic.

# they have true ceolom.

# body is uniquely shaped , it can be

elongated and spherical.

# body is unsegmented without head.

# respiration occurs through gills.

# tube feet help in locomotion.

# sexes are separate.

# host part can be regenerated.

# body surface is covered with calcareous spicules.

# Example - starfish , sea lily , brittle star etc.

Answer 2

$\bf{\underline{\underline \green{AnswEr:-}}}$

The water vascular system of echinoderms is essentially a system of fluid-filled canals that extend along each of the body regions and have many external projections called tube feet. There are several functions of the system, one of which is to use water pressure to mediate movement and assist in feeding.