Which unicellular organism has a macronucleus for trophic function and one or more micronuclei for reproduction ?

Options

A. Euglena
B. Amoeba
C. Paramecium
D. Trypanosoma

Answer

C

Explanation

Paramecium is a heterokaryotic organism, i.e. it has two nuclei near the cytostome (oral-shaped opening called mouth). The macronucleus, which is a conspicuous larger ellipsoidal vegetative nucleus, divides amitotically and controls the vegetative characters and micronucleus is a small compact reproductive nucleus which divides mitotically and controls the reproduction .