Question

Assertion : Human body produces highly toxic substances, which if not eliminated may cause the death. Reason : Excretory substance removes nitrogenous waste from the body (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is not the correct explanation of A. (c) A is true but R is false. (d) A is false but R is true. (e) Both Assertion and Reason are false.

Answer 1

Answer:

Both are true but reason is not correct..

Explanation:

Answer 2

(b) Both A and R are true but R is not the correct explanation of A is the correct option

Explanation:

Highly toxic substances: This is the human equivalent of a flavour (less than 7 drops). If it has an LD50 of between 5 and 50 mg/kg of animal body weight, it is very poisonous to humans, which is around a teaspoon.

Nitrogenous waste from the body: In the body, nitrogenous wastes tend to generate poisonous ammonia, which must be expelled. Urea is excreted by mammals, while uric acid is excreted by birds, reptiles, and some terrestrial invertebrates. Uricothelic organisms usually excrete their uric acid waste as a white paste or powder.

Types of Nitrogenous Waste:

• Ammonia is a result of protein metabolism that is created as a direct waste. All animals produce it.
• uric acid - uric acid is generated in the liver of reptiles and birds when ammonia is converted