Question

What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?

• A. 63
• B. 84
• C. 21
• D. 42

Answer 1

The correct option is A

63

The outermost cell layer of the endosperm (3n) of seed is called aleurone layer. Since, the cells of aleurone layer are triploid, the number of chromosomes would be $21\times 3=63$, as root tip cells(2n) has $21\times 2=42$ chromosomes, as n = 21.