Question

Which animals has similar larva to bipinnarial of echinodermates?

• A. Branchiostoma
• B. Doliolum
• C. Saccoglossus
• D. Pila

Answer 1

The correct option is A Branchiostoma

Bipinnarial larva is characteristic of the class Asteroidea of phylum Echinodermata. The body of bipinnaria larva is externally bilaterally symmetrical but but internally it is asymmetric. It is a free-swimming larva. It has two ciliated bands, namely the pre-oral and the post-oral. It is similar to the auricularia larva of Holothurians. A bipinnarial larva is the first stage of development of starfish. Brachiostoma has similar lava to bipinnarial of echinodermates.

Thus, the correct answer is 'Brachinostoma.'