Which of the following are found in sponges only?

مندرجہ ذیل میں سے کون سا صرف کفالت میں پایا جاتا ہے؟

Trichocysts

Nematocysts

Choanocytes

None of these

Choanocytes (collar cells) are flagellated cells unique to sponges.

It is responsible for creating water currents and filtering food particles.

Nematocysts are found in cnidarians.

Trichocysts are found in Paramecium.