Animal Kingdom Question 728
Question: Which is correct about nematocyst in Hydra
[AFMC 2001]
Options:
A) It is re-used
B) Ejection is conditioned reflex
C) Ejection occurs in response to contact and pierces the prey
D) Prevents coming in contact with other Hydra
Show Answer
Answer:
Correct Answer: C
Solution:
Nemotocyst in the cnidoblasts/cnidocytes are present wth slight projections in the tentacles of hydra.
As, it comes in contact with an organism it opens up and releases a microscopic harpoon like structure that pierces the prey.
So, the correct answer is ‘Ejection occurs in response to contact and pierces the prey’.
BETA
