Tissue culture is a technique used to grow whole new plants from small sections of a parent plant. Hormones are used to stimulate cell division and elongation. When pollen has fertilized the egg ...

Plant tissue culture (also known as micropropagation ... (a semi-solid gel containing all of the essential mineral elements that the plant would normally get from the soil, vitamins, sugar and ...

Selective weedkillers kill some plants, but not others. This can be useful for getting rid of dandelions in a lawn without killing the grass or weeds that compete with crops such as wheat.