Question
Biology Question on excretory products and their elimination
Nitrogenous waste is excreted in the form of pellet or paste by:
A
Ornithorhynchus
B
Salamandra
C
Hippocampus
D
Pavo
Answer
Pavo
Explanation
Solution
Reptiles, birds, land snails and insects excrete nitrogenous wastes as uric acid in the form of pellet or paste with a minimum loss of water and are called uricotelic animals.
Pavo (Peacock) belongs to class aves (birds). Hence, it excretes nitrogenous wastes in the form of pellets or paste.
Ornithorhynchus (Platypus) is a mammal and is ureotelic (excretes urea). Salamandra (Salamander) is an amphibian and is ammonotelic (excretes ammonia).
Hippocampus is a bony fish and is ammonotelic.