Assertion : Psilotum is living fossil

Reason: Equisetum in heterosporous ptridophyte

Both A and R are true and R is the correct explanation of A

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Both A and R are true but R is not correct explanation of A

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A is true but R is false

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A and R are false

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Solution

The correct option is C A is true but R is false
Psilotum is a living fossil and was known as "ally fern".
Equisetum is also a living fossil which produces spores. But all the spores are the same and therefore they are homosporous and not heterosporous.
Assertion is true but reason is false.

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Assertion : Psilotum is living fossil Reason: Equisetum in heterosporous ptridophyte

The correct option is C A is true but R is falsePsilotum is a living fossil and was known as "ally fern". Equisetum is also a living fossil which produces spores. But all the spores are the same and therefore they are homosporous and not heterosporous. Assertion is true but reason is false.

Assertion : Psilotum is living fossil

Reason: Equisetum in heterosporous ptridophyte

The correct option is C A is true but R is false
Psilotum is a living fossil and was known as "ally fern".
Equisetum is also a living fossil which produces spores. But all the spores are the same and therefore they are homosporous and not heterosporous.
Assertion is true but reason is false.