Q. Which one of the following options gives the correct categorisation of six animals according to the type of nitrogenous wastes (A – Ammonotelic, B – Ureotelic, C – Uricotelic) they give out?
A) A: Pigeon, Humans; B: Aquatic Amphibia, Lizards; C: Cockroach, Frog
B) A: Frog, Lizards; B: Aquatic Amphibia, Humans; C: Cockroach, Pigeon
C) A: Aquatic Amphibia; B: Frog, Humans; C: Pigeon, Lizards, Cockroach
D) A: Aquatic Amphibia; B: Cockroach, Humans; C: Frog, Pigeon, Lizards
Explanation
[Solution from source] Aquatic amphibians excrete ammonia; frogs and humans are ureotelic; and pigeons, lizards and cockroaches conserve water by excreting uric acid. The adult frog is ureotelic, which rules out the options that call it ammonotelic or uricotelic. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.