Q. Hydra recognizes its prey by
A) Nematocyst
B) Some special organs
C) Chemical stimulus of prey
D) Mechanical stimulus of prey
Explanation
Nematocysts are the stinging cells of coelenterates so that they are called cnidrians. By using the nematocyst, they paralyze the prey by injecting poison.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.