Q23 / 180 · NEET 2016 (Phase 1) · Botany

A cell at the telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at the telophase stage. There is no formation of the cell plate and thus the cell is containing more chromosomes as compared to other dividing cells. This would result in:

  • A
    Aneuploidy
  • Correct answer
    B
    Polyploidy
  • C
    Somaclonal variation
  • D
    Polyteny

Solution

Polyploid cells have a chromosome number that is more than double the haploid number. Polyploidy is common in nature and provides a major mechanism for adaptation and speciation. The cells of these plants do not form cell plate at the end of cell division thus the cells have an extra number of chromosomes as compared to other dividing cells.

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

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