Question

Which of the following is not a characteristic of phylum-Porifera?
I. Developoment is indirect (larval stage is present).
II. Mostly asymmetrical and usually marine.
III. Primitive multicellular animals with cellular level of organisation.
IV. Choanocytes lines the spongocoel and the canals.
V. Sexes are separate.

• A. I and IV
• B. Only II
• C. Only V
• D. III and IV

Answer 1

Answer: (C)

Statement $V$ is incorrect for sponges. It can be corrected as
Sexes are not separate in sponges. They are hermaphrodite, i.e. eggs and sperms are produced by the same individual.
Rest statements are correct.