Question

In pteridophytes the spore develops into a reduced, green gametophyte. What is it called? Write why

the distribution of these plants is limited on earth?​

Answer 1

Explanation:

In the life cycle of Pteridophytes, two distinct individuals can be observed i.e., there is a typical heteromorphic alternation of sporophytic and gametophytic generations. ... The actual phenomenon responsible for bringing about alternation in generation is the “Periodic Reduction of Chromosomes” as a result of meiosis.

Answer 2

the smaller spore is called microspore and the larger spore is called megaspore. Heterospory first evolved in pteridophytes. Heterospory means two kinds of spores in the same plant........they are also limited because they need cool, damp, shady and sometimes sandy places to flourish

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