Question

The nematocysts of Hydra are

• A. Penetrants
• B. Atrichous isorhizas
• C. Volvents
• D. All of the above

Answer 1

The correct option is D All of the above

There are four types of nematocyst which are found in the organisms like Hydra. They are stenotele or penetrant which can be used in capturing the prey by piercing the prey. They contain poison which helps in catching the prey. Desmonema or Volvent which are the forms which coils around the prey. There is no release of poison. Holotrichous isorhiza or large glutinant which are involved in food capturing and locomotion. Atrichous isorhiza or small glutinous which are used in the tentacular attachments of walking.

Thus, the correct answer is option D.