Question

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

• A. polyploidy
• B. somaclonal variation
• C. polyteny
• D. aneuploidy.

Answer 1

The correct option is A polyploidy

After the division of the nucleus, the division of cytoplasm takes place which is known as cytokinesis. This involves the formation of a cell plate to divide two daughter nuclei. If the cytoplasmic division is not proper and there is no formation of a cell wall then two daughter nuclei cannot be separated and it will result in the formation of a single cell with double genetic material. This condition is known as polyploidy.

So, the correct option is 'polyploidy'.