Ciliates differ from all other protozoans in

Options

A. using pseudopodia for capturing prey
B. having a contractile vacuole for removing excess water
C. using flagella for locomotion
D. having two types of nuclei

Answer

D

Explanation

Ciliates differ from all other protozonas in having two types of nuclei.
These two nuclei are usually of different size i.e., on is meganucleus and the other is micronucleus . The former controls metabolism where the latter is concerned with reproduction , e.g. paramecium .
In other protozoans , like Amoeba single nucleus is present which is involved in metabolism and reproduction.
Other option are incorrect because Ciliates use filtre feeding mechanism for obtaining food .
Like other protozoans , they also possess contractile vacuoles.
Ciliates use cilia for locomotion .