Which of the following is a sentimentally arranged excretory system?
Correct answer: B. Metanephridium
- A. Protonephridium
- B. Metanephridium
- C. Malpighian tubules
- D. Nephrons
Explanation
Metanephridia are segmentally arranged excretory organs, with repeated units occurring in successive body segments of animals such as earthworms. The likely alternative is protonephridia, but these are flame-cell systems rather than segmentally repeated metanephridia.
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