| Microsporogenesis | Megasporogenesis |
|---|---|
| $1$. This process occurs in the anther. | $1$. This process occurs in the ovule (within the ovary). |
| $2$. Meiotic division of the pollen mother cell $(PMC)$ forms a microspore tetrad. | $2$. Meiotic division of the megaspore mother cell $(MMC)$ forms a megaspore tetrad. |
| $3$. Four functional microspores are usually produced from a tetrad. | $3$. Usually,only one functional megaspore is produced; the other three degenerate. |
| $4$. It leads to the formation of male gametophytes (pollen grains). | $4$. It leads to the formation of the female gametophyte (embryo sac). |
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