Class 12 Biology Reproduction Sexual reproduction in Flowering Plants



If a tetraploid plant contains 48 chromosomes in its nucleus, then number of chromosomes in the egg cell and in a synergid will be
(a)
24 and 48
(b)
24 and 24
(c)
48 and 48
(d)
48 and 24
Correct answer: (b) 
Solution: The plant is tetraploid (4n) and there are 48 chromosomes in the nucleus.  The egg cell and the synergid are produced by meiotic division and are haploid in nature. So, 48/2=24 chromosomes in the egg and synergid.
Thus, the correct answer is option B. 

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sexual reproduction in flowering plants
reproduction in organisms
human reproduction
reproductive health
reproduction in organism