Question

Write the character of phylum echinodermata

Answer 1

General characteristics of Phylum Echinodermata
(Echinos: Spines; derma: Skin)
Kingdom: Animalia
Habitat: These are exclusively marine
Grade of organization: organ system grade
Germ layer: triploblastic
Symmetry: Adults are radially symmetrical while the larvae are bilaterally symmetrical.
Coelom: present ( coelomate)
Body without segmentation
The shape of the body is flat, star like, spherical or elongated.
Head is absent

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Answer 2

spiny bodied,organ system level of organisation.
radially symmetrical but larvae are bilaterally symmetrical
triploplast
coelomate animal
excratory system absent
sexes are separate
external fertilisation
indirect development