Ammonia is generally excreted across body or gill surfaces by:
ADeletion
BDiffusion
CDigestion
DDilution
Answer & Solution
Correct answer: B. Diffusion
1. Ammonia is readily soluble in water.
2. It is generally excreted by diffusion across body surfaces or gill surfaces.
3. It leaves as ammonium ions.
_Source: NCERT Class 11 Biology, Ch 19 'Excretory Products and their Elimination'_
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