Question

Colloblast (adhesive) cells are the characteristic of

• A. Hydra
• B. Ctenoplana
• C. Obelia
• D. All of the above

Answer 1

The correct option is B Ctenoplana

• Tentacles are the organs that are used to catch prey. These are present at the opening of the gastrovascular cavity.
• Colloblasts are a cell type found in ctenophores.
• They are widespread in the tentacles of these animals and are used to capture prey.
• These are found in all ctenophores except those of the order Beroida, as they lack tentacles.

So, the correct answer is option B.