What are the affinities of echinodermata and annelida?
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Explanation:
Affinities of echinodermata :
-Echinoderms show affinities with Annelida, Brachiopoda & Chordata.
Affinities with Annelida :
-Ciliated bands
Affinities with Brachiopoda :
-Coeblastula is seen
-Holoblastic cleavage
-Enteroceolus coelom
-Free-swimming larval stage
Affinities with Chordata :
-Skeletal system mesodermal origin
-Nervous system is infra-epidermal
-Enteroceolus coelom
-Arginine phosphate & creatine phosphate
-Radial holoblastic cleavage
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Answer:
Annelid, phylum name Annelida, also called segmented worm, any member of a phylum of invertebrate animals that are characterized by the possession of a body cavity (or coelom), movable bristles (or setae), and a body divided into segments by transverse rings, or annulations, from which they take their name.
Answer. Echinoderms show affinities with Annelida, Brachiopoda & Chordata.
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