Coelenterata Ctenophora - Questions & Answers | Exam2Win

Take a timed mock test specifically for Coelenterata Ctenophora.

1. The green colour of Hydra viridis (Chlorohydra viridissima) is due to

A. Chloroplasts

B. Pigment

C. Zoochlorella

D. None of the above

Explanation:

2. Nematocyst is a

A. Cell

B. Group of cell

C. Organ

D. Part of a cell

Explanation:

3. Penetrant, volvent and glutinant are types of

A. Nematocysts of Hydra

B. Tentacles of Hydra

C. Zooids of Obelia

D. Tentacles of Obelia

Explanation:

4. Gonads of Obelia occur

A. In hydrula stage and indefinite in number

B. Bases of tentacles of medusa and 8 in number

C. On blastostyles and 8 in number

D. On radial canals, oral surface of medusa and four in number

Explanation:

5. Which one has a tree-like branched form?

A. Pennatula

B. Gorgonia

C. Physalia

D. Porpita

Explanation: