Formation of an Embryo Sac
There are two processes known as megasporogensis and megagametogenesis through which an Embryo Sac form. Below is the overview of complete process.
Megasporogenesis
- This process occurs within the part of flower carpel known as ovule.
- In ovule, there is diploid cell present known as megasporocyte which go through meiosis and form four large haploid cells known as megaspores.
- In four megaspores three haploids are degenerative only one is functional.
Also Read: Difference Between Carpel and Pistil
Megagametogenesis
- The one functional haploid megaspore produces numerous cells through mitotic division.
- And these numerous cells form a mature Embryo Sac.
- The structure of an Embryo Sac might be different depending upon the species of the plant.
- The mature Embryo Sac is having egg appratus, central cell and antipodal cell.
Also Read: Difference Between Haploid And Diploid
Embryo Sac
Embryo Sac is a type of structure that is found in an ovule of a female flowering plant. An ovule is the part of the female flowering plant reproductive organ known as the pistil or carpel, and that ovule is present in the ovary of the female flower. Megasporogenesis and megagametogenesis is a process through which Embryo Sac forms inside the ovule. Embryo Sac is known to be important for the reproduction of female flowers. The function of an Embryo Sac is to do fertilization when male pollen approaches the female ovule and forms a pollen tube that initiates male sperm cells to reach an Embryo Sac.
Table of Content
- Definition of Embryo Sac
- What is an Embryo Sac?
- Structure of an Embryo Sac
- Types of Embryo Sac
- Formation of an Embryo Sac
- Fertilization within the Embryo Sac
- Function of an Embryo Sac