Share this entry

Share this page

embryo sac

Syllabification: em·bry·o sac

Definition of embryo sac in English:

noun

A cell inside the ovule of a flowering plant where fertilization occurs and which becomes the female gametophyte, containing the endosperm nucleus and the fertilized ovum that develops into the embryo.
Example sentences
  • During pollination, the vegetative cell serves as a ‘powerhouse’ to deliver the generative cells to the embryo sac (female gametophyte).
  • Gametophytic apomixis can result from diplospory, in which the unreduced embryo sac originates from a generative cell, or apospory, in which the embryo sac develops from somatic cells of the ovule.
  • The sporogenous cells of the ovary lead to the production of the female gametophyte or embryo sac that contains the egg cell.

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day terpsichorean
Pronunciation: ˌtərpsikəˈrēən
adjective
of or relating to dancing