Q. 55.0( 2 Votes )
Embryo sacs of so
- Apomixis is development of a seeds without prior fertilization. Example: replacement of the flower by bulbils and replacement of seed by a plant.
- It is observed in few flowering.
- Apomixis is a form of asexual reproduction that mimics sexual reproduction.
- Apomixis avoids the processes of meiosis and fertilization, leading to embryo development.
- The offsprings produced in this case are genetically identical to the parent plant.
- Embryo sacs of some apomictic species appear normal but contain diploid cells due to absence of meiotic division at the megaspore mother cell stage.
- As the megaspore mother cell has a diploid nucleus, if it undergoes mitosis instead of meiotic, all the resulting nuclei and cells will be diploid in nature.
- Apomixis is common in plants like Asteraceae, Poaceae.
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