Assertion (A): In Angiospermic phylogenitic group system, the arrangement of plants show progressive or retrogressive characters.

Reason (R): Evolutionary trends are the basis for phylogenitic system of classification.

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A is true, R is true and R is correct explanation of A

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

A is true, R is false

A is false, R is true

answer is A.

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Detailed Solution

The classifications of post-Darwinnian period considered evolutionary trends in plants and so they are considered as phylogenetic systems. In a phylogenetic system, primitive and advanced characters are recognized. Evolution may be progressive or retrogressive . The latest phylogenetic classification system is APG ( Angiospermic phylogenitic group).

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