Multiple choice

___________ play important role in expelling excess water and wastes.

  1. Vacuoles

  2. Golgi apparatus

  3. Endoplasmic reticulum

  4. Plastids

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In many unicellular organisms like Amoeba, contractile vacuoles are essential for osmoregulation. They collect excess water and metabolic wastes from the cell and expel them into the surrounding environment.