Question
Biology Question on Kingdom Animalia
Which of the following is correct about nematocyst?
A
It can be re-used
B
It is excretory organ in arthropods
C
It is ejected on contact and pierce the prey
D
None of these
Answer
It is ejected on contact and pierce the prey
Explanation
Solution
Nematocysts are the stinging cells and are the organs of offence and defence of coelenterates, Nematocyst contains a poisonous proteinaceous fluid hypnotoxin along tube which injects the fluid into the victim. Nematocysts are activated in response to chemicals secreted by prey. They explode after coming in contact with the prey.