Question

What do you mean by contracted vacuoles?

Answer 1

a vacuole in some protozoans which expels excess liquid on contraction.

Answer 2

$\mathfrak{\huge{\pink{Hello}}}$

A contractile vacuole (CV) is a sub-cellular structure (organelle) involved in osmoregulation. It is found predominantly in protists and in unicellular algae. It was previously known as pulsatile or pulsating vacuole.