Question
Macro and micronucleus are the characteristic feature of
A.
Paramecium and Vorticella
B.
Opelina and Nictothisus
C.
Hydra and Ballantidium
D.
Vorticella and Nictothirus
Answer :
Paramecium and Vorticella
Solution :
The macronucleus lacks nuclear membrane and is formed of trophochromatin. It regulates the metabolic activities of the body and it is also known as trophonucleus. The micronucleus has a definite nuclear membrane and controls the reproductive activities of Paramecium and Vorticella.