Question

Phylum Protozoa is divided into four classes on the basis of their

• A. Nuclear structure
• B. Locomotoy structure
• C. Mode of reproduction
• D. Mode of nutrition

Answer 1

The correct option is B Locomotoy structure

Locomotion can be used as the criterion for classifying Protozoa. Phylum Protozoa is divided into four classes- Rhizopoda, Mastigophora, Sporozoa and Ciliata. Pseudopodia is the locomotory organ in Rhizopoda, Flagella is the locomotory organ in Mastigophora. No locomotory organ is present in Sporozoa and cilia as a locomotory organ in Ciliata.

Hence, option B is the correct answer.