Question

A fertilised egg of a plant has $40$ chromosomes. The number of chromosomes present in the microscope mother cell is?

• A. $20$
• B. $40$
• C. $60$
• D. $80$

Answer 1

The correct option is A $20$

Fertilization in plant occurs when haploid gametes meet to create a diploid zygote, which develops into an embryo. So if the fertilized egg of a plant has 40 chromosomes, it must be the combination of its parent's chromosomes, half from microspore and half from megaspore mother cell.

So the correct answer is '20'.