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Q.
Fusion product of polar nuclei is
NTA AbhyasNTA Abhyas 2020Sexual Reproduction in Flowering Plants
Solution:
Double fertilization is a unique characteristic observed in the Angiosperm group of plants. In this, two fertilizations are observed - $1^{s t}$ between the female and male gametic cells forming zygote and $2^{n d}$ is between the second male gamete and polar nuclei forming the primary endosperm nucleus. The polar nuclei is also called as secondary nucleus that fuses with the second male gamete.