Suggest why explants are sterilised?line4

These tiny explants can be sterilised in dilute bleach to kill surface bacteria and fungi, then grown in a suitable culture medium. The explants divide by mitosis and grow but if the chemicals in the growth medium are correct, they will also start to differentiate into roots, shoots and leaves.

Explanation:

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

the endomembrane system i think