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Assertion (A): The spread of pteridophytes is unrestricted and have spread to many geographical regions Reason (R): The gametophytes of pteridophytes require cool, damp, shady places to grow and need for water for fertilisation Regarding (A) and (R) :

( a ) Both A and R are correct & R is the correct explanation for A
( b ) A is correct but R is incorrect
( c ) Both A and R are correct but R is not the correct explanation for A
( d ) A is incorrect but R is correct
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(D) is the right answer.

In pteridophytes - The gametophytes require cool, damp, shady places to grow. Because of this specific restricted requirement and the need for water for fertilisation, the spread of living pteridophytes is limited and restricted to narrow geographical regions.
answered Jan 3, 2014 by pady_1
 

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