Why the tip of a plant is used for tissue culture?

$\bullet$ Tips of plants are generally used for tissue culture as they are rich in a group of undifferentiated cells that are capable of rapid division. (0.5 mark)
$\bullet$ These cells divide when transferred to a nutrient medium to give rise to an unorganised mass of cells called the callus. (1 mark)
$\bullet$ They do not posses sclerenchyma cells(dead cells that do not divide). (0.5 mark)