Which one of the following pairs about organ/part that helps in locomotion is not correctly matched?
Euglena : Flagellum
Paramecium : Cilia
Nereis : Pseudopodia
Starfish : Tubefeet
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CDS-1 – 2018
A) Euglena: Flagellum – Correct. Euglena is a motile protozoan that uses a whip-like structure called a flagellum for propulsion.
B) Paramecium: Cilia – Correct. Paramecium is a motile protozoan covered in numerous short, hair-like structures called cilia, which it uses for movement and feeding.
C) Nereis: Pseudopodia – Incorrect. Nereis is a genus of marine polychaete worms. Polychaetes like Nereis use lateral, fleshy appendages called parapodia (often bearing bristles called chaetae) for locomotion (crawling, swimming) and respiration. Pseudopodia are temporary cytoplasmic extensions used for locomotion and feeding by some protozoans (like Amoeba) and certain cells in multicellular organisms. Nereis does not use pseudopodia for locomotion.
D) Starfish: Tubefeet – Correct. Starfish (sea stars) are echinoderms that use their tube feet, which are part of the water vascular system, for locomotion, grasping, and feeding.