SSC MTS EXAM

Detailed explanation-1: -Callus is defined as a group of cells derived from competent source tissue that is cultured under in vitro conditions to form an undifferentiated mass of cells.

Detailed explanation-2: -In tissue culture/micropropagation, a small cut piece of a plant tissue is propagated in a nutrient culture medium. The tissue forms an unorganized and undifferentiated mass of cells as it utilizes the nutrients in the medium. This undifferentiated mass of cells is known as callus.

Detailed explanation-3: -Embryo culture is a type of plant tissue culture that is used to grow embryos from seeds and ovules in a nutrient medium. In embryo culture, the plant develops directly from the embryo or indirectly through the formation of callus and then subsequent formation of shoots and roots.