In echinodermata the important larval form is? A-bipinnaria. B-trochophore C-cercaria.D-amocoete

dear student 
bipinnaria - larva of echinodermata (specially class - Asrteroidea)
Trochophore - larva of mollusc and annelids
Cercaria - larva of Fasciola hepatica (flatworms)
ammocoete - larva of lamprey

so answer to your question will be option 'A'

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