Q23 / 157 · NTA Abhyas (NEET) 2020 · Zoology · Excretory Products and their Elimination
Which of the following statements are correct about the modes of excretion?
- AAll bony fishes are ammonotelic.
- Correct answerBAquatic mammals are ureotelic.
- CInsects such as cockroach are ammonotelic.
- DTadpole of a frog is ureotelic.
Solution
Freshwater bony fishes are ammonotelic. Marine bony fishes release trimethylamine oxide as their chief excretory product. Terrestrial insects, such as cockroach, are uricotelic, while aquatic insects are ammonotelic. Tadpole of a frog is ammonotelic, while the adult frog is ureotelic. All mammals, terrestrial as well as aquatic, are ureotelic in nature.
Hence, the correct answer is option: 'B'.