Q34 / 200 · NEET 2011 (Screening) · Botany

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

  • Correct answer
    A
    63
  • B
    84
  • C
    21
  • D
    42

Solution

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 $\frac{42}{2} \times 3=21 \times 3=63$, root tip cells ( $2 n$ ) has 42 chromosomes.

Hence, the correct answer is option: 'A'.

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