Question

Write down four charactristics of Ctenophora and give two examples.

Answer 1

(i) Transparent body with biradial symmetry.
(ii) Two tentacles and eight longitudinal rows of ciliary comb-plates for locomotion are present.
(iii) Marine, solitary and free-swimming.
(iv) No polymorphism or dimorphism occurs.
Example: Pleurobrachia and Cestum..