Aquatic animals like fish excrete their wastes in gaseous form as (a) Oxygen (b) Hydrogen (c) Ammonia (d) Nitrogen
ScienceClass 7CBSEAnswered 27 Mar 2026
Answer
Soln:
The answer is (c) Ammonia
Explanation:
Oxygen is expelled out by plants, Hydrogen is a cellular waste product, Nitrogen is excreted in the form of urea and the organisms which excrete urea is called as ureotelic organisms. Aquatic animals will excrete waste products in the form of ammonia gas which dissolves in water and these organisms are known as ammonotelic animals.
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