CBSE Class 11-science Answered
what is heterospory?briefly comment on its significance.
Asked by thakursonali2000 | 22 Jun, 2015, 10:19: AM
Expert Answer
- 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.
Answered by Hemangi Binny | 22 Jun, 2015, 10:54: AM
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