Question

Read the assertion and reason carefully to mark the correct option in question.

Assertion: Progressive degeneration of visceral muscle is called muscular dystrophy.

Reason: Muscular dystrophy is due to decreased level of estrogen in old age.

• A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
• B. If both assertion and reason are true but the reason is not the correct explanation of the assertion.
• C. If assertion is true but the reason is false.
• D. If both assertion and reason are false.

Answer 1

The correct option is D If both assertion and reason are false.

Assertion-Reason relation

Muscular dystrophy is a locomotory disorder characterised by progressive degeneration of skeletal muscles. This disorder damages the muscles which causes weakness in muscles. The affected person finds it difficult to walk, run and jump.
Visceral muscles are smooth muscles located in the inner walls of the visceral organs. For example, female reproductive tract.
Hence, the given assertion- “Progressive degeneration of visceral muscle is called muscular dystrophy” is incorrect.

Muscular dystrophy is a genetic disorder. It is caused due to mutation in the genes which are responsible for the protection of muscle fibres. These mutations are inheritable and may affect the successive generations as well.
Hence, the given reason- “Muscular dystrophy is due to decreased level of estrogen in old age” is incorrect.