A) Echinodennata
B) Mollusca
C) Chordata
D) Porifera
Correct Answer: A
Solution :
Echinoderms are exclusively marine, carnivorous and benthonic (i.e., found at the bottom of sea) animals. Body shape is cylindrical, globular, star like, flower like or cucumber like; Head formation is absent. Respiration takes place through gills (dermal branchia) and tube feet.
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