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1.Sexual Reproduction in Flowering Plants
medium
If the cells of root in wheat plant have $42$ chromosomes, then the no. of chromosome in the cell of pollen grain is
A
$14$
B
$21$
C
$28$
D
$42$
(AIIMS-2014)
Solution
Number of chromosome in root cells of wheat plant is
$2n = 42$
$n = \frac{{42}}{2} = 21$
The number of chromosome in the cell of pollen grain is $21$ because pollen grains are haploid $(n)$ in nature.
Standard 12
Biology
