Assertion: TMV is a virus which causes mosaic disease.

Reason: TMV has RNA as genetic material.

If both assertion and reason are true and reason is the correct explanation of assertion

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

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If assertion is true but reason is false

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If both assertion and reason are false

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Solution

The correct option is B If both assertion and reason are true but reason is not the correct explanation of assertion
Tobacco mosaic virus (TMV) is single stranded RNA virus which infects a wide range of plants, especially tobacco. The infection causes characteristic patterns, such as mosaic (mosaic disease). This is not because RNA is the genetic material of the virus. Hence, reason is not the justification for the assertion.

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Similar questions

Read the assertion and reason carefully to mark the correct option out of the options given below :

(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 reason is not the correct explanation of the assertion.

(d) If the assertion and reason both are false.

(e) If assertion is false but reason is true.

Assertion: Acetic acid does not undergo haloform reaction.

Reason: Acetic acid has no alpha hydrogens.

\to τ = \to r \times \to F b u t \to τ \neq \to F \times \to r .

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