In some members of which of the following pairs of families, pollen grains retain their viability for months after release ?
In some members of which of the following pairs of families, pollen grains retain their viability for months after release ?
- [NEET 2021]
- A
Poaceae ; Rosaceae
- B
Poaceae; Leguminosae
- C
Poaceae ; Solanaceae
- D
Rosaceae ; Leguminosae
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The cell that divides to form two male nuclei in angiosperms is
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If the cells of root in wheat plant have $42$ chromosomes, then the no. of chromosome in the cell of pollen grain is
If the cells of root in wheat plant have $42$ chromosomes, then the no. of chromosome in the cell of pollen grain is
- [AIIMS 2014]
How many pollen grains are formed from $10$ microspore mother cells by meiosis
How many pollen grains are formed from $10$ microspore mother cells by meiosis
- [AIPMT 1996]
$A$ : Restitutional nucleus can be observed in endothecium cells.
$R$ : Endothecium cells are usually triploid.
$A$ : Restitutional nucleus can be observed in endothecium cells.
$R$ : Endothecium cells are usually triploid.
The odd one is
The odd one is
- [AIPMT 1991]