Question

Which of the following is an exceptional feature of the animal shown in the diagram?

• A. All parasites
• B. All without contractile vacuoles
• C. Show nuclear dimorphism
• D. Never reproduce sexually

Answer 1

The correct option is C Show nuclear dimorphism

When two different type of nuclei are present in the cell the phenomenon is known as nuclear dimorphism. Paramecium or slipper animalcule belongs to phylum chilophora. Nuclear dimorphism is found in paramecium i.e., The macronucleus and micronucleus (two nuclei) are present in the endoplasm. The micronucleus is involved in the transfer of genetic material through sexual reproduction and macronucleus is considered as the vegetative nucleus and helps to control the body function.

Thus, the correct answer is option C.