Question

In which type of embryogeny first division of the zygote is vertical?

Answer 1

zygote divides immediately vertically after the first division of primary endosperm nucleus or it divides earlier than the first division of primary endosperm nucleus. 

Answer 2

Answer:

The zygote in crucifers divides transversally to produce terminal and basal cells. The terminal cells divides vertically to produce 4 celled embryo and basal cell produces suspensors and in some plant produces hypocotyl.