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  • Can someone help me with this, In angiosperms,microsporogenesisand megasporogenesis:

In   angiosperms, microsporogenesis and megasporogenesis:

  • Option 1)

    form gametes without further divisions

  • Option 2)

    Involve meiosis

  • Option 3)

    occur in ovule

  • Option 4)

    occur in anther

 

Answers (1)

 

Megasporogenesis -

The process of formation of megaspores from the megaspore mother cell is called megasporogenesis. 
Ovules generally differentiate a single megaspore mother cell (MMC) in the micropylar region of the nucellus. It is a large cell containing dense cytoplasm and a prominent nucleus. 

- wherein

Meiosis results in the production of four megaspores .

 

 

Microsporongenesis -

As the anther develops, the cells of the sporogenous tissue undergo meiotic divisions to form microspore tetrads. As each cell of the sprorogenous tissue is capable of giving rise to a microspore tetrad. Each one is a potential pollen or microspore mother cell.

- wherein

The process of formation of microspores from a pollen mother cell (PMC) through meiosis is called microsporogenesis. 

 

microsporogenesis &  Megasporogenesis takes place through meiosis.


Option 1)

form gametes without further divisions

Incorrect

Option 2)

Involve meiosis

Correct

Option 3)

occur in ovule

Incorrect

Option 4)

occur in anther

Correct

Posted by

Vakul

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