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

  • 63

  • 84

  • 21

  • 42

Answer

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 = 63, as root tip cells (2n) has 42 chromosomes.

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 = 63, as root tip cells (2n) has 42 chromosomes.