Question

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

Assertion: Fungi may be saprophytic, parasitic or symbiotic.

Reason: The cell walls of fungi are composed of chitin and polysaccharide.

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

Answer 1

The correct option is A

If both assertion and reason are true but the reason is not the correct explanation of the assertion.

Assertion - Reason relation

Assertion : Fungi may be saprophytic, parasitic or symbiotic.

Elaboration: Fungi do not have chlorophyll and hence they follow heterotrophic mode of nutrition.

• Some fungi derive their nutrition from dead and decomposed organic matter and hence they are saprophytic.
• The parasitic fungi get their nutrients from the live host.
• Fungi also form the symbiotic association with algae and the roots of higher plants.

Hence, the given statement in the assertion is true.

Reason: The cell walls of fungi are composed of chitin and polysaccharide.

Elaboration: Fungal cell wall is made up of chitin which is a polymer of N-acetylglucosamine. However, the mode of nutrition of fungi is not related to the cell wall present in them. Hence, the reason does not explain the assertion.