First slide

Pteridophytes

Question

Distribution of pteridophytes is limited to narrow geographical regions on this planet because-

Easy

A

The gametophytes survive in cool damp shady places and water is needed for fertilisation
B

The sporophytes can not survive in light exposed regions
C

Sporophytes require water for spore dispersal
D

Sporophytes have reduced size compared to gametophytes

Solution

Since the gametophytes of pteridophytes do not have vascular tissues and they have only unicellular rhizoids they can not survive in non-moist light exposed areas. They also requires water for fertilization.

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