Question

If root cell has 42 chromosomes then the number of chromosome in egg is

• A. 42
• B. 21
• C. 7
• D. 63

Answer 1

The correct option is B 21

• The egg in angiosperms is produced after meiotic cell division in the megaspore mother cell.
• The megaspore mother cell is diploid and the egg cell is haploid. If the root cell is having 42 chromosomes, the number of chromosomes present in the egg will be half, i.e., 21.
  Hence, option B is correct.