Which system is present in nematodes?
Correct answer: B. Tube - like digestive system
- A. Sac - like digestive system
- B. Tube - like digestive system
- C. Circulatory system
- D. Respiratory system
Explanation
Nematodes possess a complete, tube-like digestive system with a mouth, intestine and anus, allowing food to move in one direction. Students may choose a circulatory or respiratory system, but nematodes lack specialised systems for both functions and rely on diffusion.
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