The main advantage of using plant cell culture for genetic engineering is that it enables the introduction of foreign genes into plant cells.

Plant cell culture is primarily used to produce genetically identical plants through tissue culture techniques.

Auxins are plant hormones that primarily promote root development in plant cell culture.

Callus formation is significant as it is a step towards organogenesis, where the callus can differentiate into roots or shoots.

Tissue culture is the process of growing plant cells in a controlled environment.

Murashige and Skoog medium is a widely used nutrient medium for plant cell culture.

Tissue explantation is a common method for initiating plant cell culture, where small pieces of plant tissue are used to grow new plants.

All of the above (roots, leaves, and seeds) can serve as common sources of explants for plant cell culture.

Increased genetic diversity is not a benefit of plant cell culture, as it typically produces clones of the original plant.

Cytokinins are primarily associated with promoting shoot development in plant cell culture.