Question

one nucleus from each end of the embryo sac move to the center and are called​

Answer 1

SEED DEVELOPMENT | Endosperm Differentiation

The megaspore mother cell in turn subsequently undergoes meiosis to give rise to four megaspores. ... One nucleus from each side then moves to the center of the embryo sac, where they remain in contact. Fusion of these two polar nuclei does not take place until fertilization.

~SPOIDERMON

have a spoidy day