Why the primary endosperm nucleus is triploid?
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2
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DURING DOUBLE FERTILIZATION
WEEKEND MALE GAMETE OF POLLAN GRAIN REACHES TO EMBRYO THROUGH MICROPYLAR END
AND ENTERS .....
OTHER MALE GAMETE (N) FUSE WITH POLAR NUCLIE (2N)
TO FORM PRIMARY ENDOSPERM NUCELUS (PEN)(3N)
AND THE PROCESS IS KNOWN AS TRIPLE FUSION
AS 2N+N=3N
HENCE IT IT'S TRIPLOID
THE CENTRAL CELL IN WHICH PEN IS PRESENT IT'S KNOWN AS PRIMARY ENDOSPERMIC CELL(PEC)
HOPE HELP U
DURING DOUBLE FERTILIZATION
WEEKEND MALE GAMETE OF POLLAN GRAIN REACHES TO EMBRYO THROUGH MICROPYLAR END
AND ENTERS .....
OTHER MALE GAMETE (N) FUSE WITH POLAR NUCLIE (2N)
TO FORM PRIMARY ENDOSPERM NUCELUS (PEN)(3N)
AND THE PROCESS IS KNOWN AS TRIPLE FUSION
AS 2N+N=3N
HENCE IT IT'S TRIPLOID
THE CENTRAL CELL IN WHICH PEN IS PRESENT IT'S KNOWN AS PRIMARY ENDOSPERMIC CELL(PEC)
HOPE HELP U
Answered by
2
The central cell is a highly active cell that performs several important functions in the embryo sac. The fusion of the secondary nucleus or the polar nuclei with the sperm nucleus gives rise to the primary endosperm nucleus, which is generally triploid.
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