What is the function of trichocyst in paramecium?
Movement
Defence
Excretion
Respiration
Correct answer is B
Trichocyst, a structure in the cortex of certain ciliate and flagellate protozoans, consists of a cavity and long, thin threads that can be ejected in response to certain stimuli. Trichocysts may be widely distributed over an organism or restricted to certain areas (e.g., tentacles, papillae, around the mouth).