Amoeba moves in water with the help of locomotory organs called_________?
Correct answer: C. pseudopodia
- A. tube feet
- B. cilia
- C. pseudopodia
- D. flagella
Explanation
Amoeba moves by extending temporary cytoplasmic projections called pseudopodia, whose formation depends on cytoplasmic streaming. Cilia and flagella are permanent hair-like or whip-like structures, so students may choose one of them by assuming every microscopic organism uses the same locomotory organ.
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Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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