Question

Assertion: Aquatic mammals like whales and seals are ureotelic.
Reason: Ureotelic animals require a very large amount of water for the removal of urea as compared to the amount of water ammonotelic animals require for the removal of ammonia.

• A. Both the assertion and reason are true and the reason is the correct explanation for the assertion
• B. Both the assertion and reason are true but the reason is not the correct explanation for the assertion
• C. Assertion is true but the reason is false
• D. Reason is true but the assertion is false

Answer 1

The correct option is C Assertion is true but the reason is false

Ureotelism is the process of eliminating urea as a nitrogenous waste. Aquatic mammals like whales and seals are ureotelic animals.
Ammonotelism is the process of eliminating ammonia. Aquatic animals such as amoeba, sponges, hydra, star fish, bony fishes, tadpoles are ammonotelic animals.
Urea requires less water for its excretion as compared to ammonia.