Solution: The most important differences between microsporogenesis and megasporogenesis are discussed below:
|It is the process where a diploid microspore mother cell undergoes meiotic cell division to form haploid microspores and male gametophytes.
|It is the process where the formation of haploid megaspores and female gametophytes takes place from the diploid mother cell.
|The process occurs inside pollen sacs or microsporangia.
|The process occurs in the nucellus of the ovules or megasporangium.
|Microsporogenesis produces pollens.
|Megasporogenesis produces an embryo sac.
|Microspores are arranged in a tetrahedral fashion.
|Megaspores are arranged in a linear fashion.
|All the four microspores formed are functional.
|Only one out of the four megaspores formed is functional.
Meiotic cell division, also known as reductional division, occurs during megasporogenesis and microsporogenesis. The cell division is called reductional because that leads to the production of haploid gametes.
The structures formed at the end of these events are:
Microsporogenesis – Pollen grain
Megasporogenesis – Embryo sac