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Excretion in a leech is carried out by segmentally arranged paired tubules called:
AFlame cells
BMalpighian tubules
CNephridia
DKidneys
Answer & Solution
Correct answer: C. Nephridia
1. Excretion in the leech is carried out by paired tubules in the segments.
2. These segmentally arranged tubules are called nephridia.
3. There are 17 pairs opening by nephridiopores from segments 6 to 22.
4. So nephridia is the correct answer.
5. Option D kidneys are the excretory organs of the rabbit, the trap.
6. Option B Malpighian tubules are insect excretory organs, so they are wrong.
7. Option A flame cells belong to flatworms, not the leech.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 13 Structural Organisation of Animals "Excretory System", p.198_
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