Question

Assertion (A): The excretory products of lizards is uric acid.​

​Reason (R): Lizards show terrestrial habitat.​

Answer 1

Correct option: (a) Both assertion(A) and reason(R) are true and reason(R) is the correct explanation for assertion(A). ​

• Nitrogenous wastes in the body tend to form toxic ammonia, which must be excreted. ​

• Animals in aquatic habitats have a large amount of water available in their surroundings so they can directly excrete ammonia.

• In terrestrial animals, ammonia is converted into less harmful compounds like urea and uric acid. ​

• This is because, conservation of water is important for terrestrial animals. ​

• So, terrestrial animals like lizard are adapted to excrete urea or uric acid.​

• So, the correct option is (a)​