what is heterospory ?write its origin ...

what is heterospory ?write its origin and importance?
  • 1 answers

Yogita Ingle 2 months, 3 weeks ago

  • Heterospory is the phenomenon in which two different kinds spores are produced. These spores differ in size.  The smaller spore is called microspore while the larger spore is called megaspore.
  • Microspore gives rise to the male gametophyte while the megaspore gives rise to the female gametophyte.
  • It was first evolved in pteridophytes.
  • The heterospory is the first step of evolution of seed development in gymnosperms and angiosperms.

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