Question

PEN is-(a) 3n
(b) n(c) n
(d) 4n

Answer 1

Answer: PEN- primary endosperm nucmeus is 3n

Explanation:it usually occours in double fertilization where in there are 2 phases

1)SYNGAMY - male gamete fusses with the egg to form zygote (2n)

2)TRIPLE FUSION- where the 2nd male gamete fuses with the two fused polar nuclei to form primary endosperm nucleus -PEN (3n)

Hope this helps u!