Development Of The Embryo Sac Flashcards
What is each ovule composed of?
A number of diploid cells
What happens to one of the diploid cells in the ovule?
It divides by meiosis to form a single haploid cell called the embryo sac
What is the embryo sac?
The single haploid cell formed when one of the diploid cells in the ovule divide by meiosis
What forms the embryo sac?
One of the diploid cells in the ovule which divides by meiosis
What happens to the embryo sac after it has been formed?
It undergoes mitosis three times to form eight haploid nuclei
How many nuclei does the embryo sac have?
It has eight nuclei
What happens to the eight nuclei in the embryo sac?
3
Five of these die
One of the eight is the egg cell
Two of the eight are the two polar nuclei
How many egg cells are there in the embryo sac?
There is one
How many polar nuclei are there in the embryo sac?
Two
How many of the eight nuclei formed by mitosis die off?
Five
