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Arathy Nair from KENDRIYA VIDYALAYA NO.2 , asked a question
Subject: Biology , asked on 14/4/11

HOW TAPETAL CELLS BECOME BINUCLEATE

Pragya Singh , From Dewan Public School , added an answer
Answered on 21/5/12

 There could be two reasons :

1)Endomitosis - Endos means inside so in this type of mitotis, the division of nucleus takes place within intact nuclear membrane(without rupturing it) which leads to polyploid nucleus.
2)Multinucleate condition - when the nuclear division is not followed by wall formation (cytokinesis) so the nucleus happens to be binucleate.

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