Answer:
(i) Differences between microsporogenesis and megasporogenesis
(ii) Type of cell division during microsporogenesis and megasporogenesis meiosis.
(iii) Structure formed —
(a) Due to microsporogenesis. Microspores (pollen grains) are formed which lead to development of male gametophyte.
(b) Due to megasporogenesis. Megaspores are formed. Out of them one megaspore leads to development of female gametophyte (embryo sac).
Character
Microsporogenesis
Megasporogenesis
1. Definition
This is the formation of microspores in sporogenous tissue (microspore mother cell) due to meiosis.
This is the formation of megaspores in megaspore mother cell due to meiosis.
2. Number of spore mother cells involved
Many.
One.
3. Fate of spore
Microspore leads to development of male gametophyte.
Leads to formation of female gametophyte (embryo sac).
4. Site of occurrence
Pollen sacs (microsporangia) in anther lobes.
In nucellus of ovule.
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