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What is aposproy / somatic aposory ?...

What is aposproy / somatic aposory ?

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(i) Megaspore mother cell undergoes the normal meiosis and four megaspores formed gradually disappear.
(ii) A nucellar becomes activated and develops into a diploid embryo sac.
(iii) This type of apospory is also somatic apospory.
Examples: Hieracium and Parthenium.
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