Write down four characteristics of Ctenophora and give two examples.

Characters of Ctenophora:

(i) Ctenophores are commonly known as sea walnuts or comb jellies.

(ii) They are exclusively marine, radially symmetrical and diploblastic organisms.

(iii) They have tissue level of organisation.

(iv) Digestion is both extracellular and intracellular.

Examples: Pleurobrachia and Ctenoplana.