Which of the following is sedentary in adult and active in larval stage?
Correct answer: A. Sponge
- A. Sponge
- B. Leech
- C. Salamander
- D. Grasshopper
Explanation
The correct answer is Sponge. Sponges have a sedentary adult stage where they are attached to a substratum, while their larval stages (Amphiblastula and Parenchymula) are free-living and active. Leeches, salamanders, and grasshoppers are all active in both their adult and larval stages, making them incorrect choices for this question.
This question appeared on the ETEA MDCAT 2009 paper, which you can sit online with every answer explained.
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