The pioneer worker in plant tissue culture is:

Virus-free plants can be formed by

What is the process of transferring cell culture from an old medium to a new medium called?

The inherent capacity of a cell to regenerate a new whole organism is called

Which enzyme is useful for obtaining plant protoplasts?

In tissue culture experiments using tobacco callus,it was observed that when the culture medium contains $2 \ ppm$ of $IAA$ and $2 \ ppm$ of kinetin,an undifferentiated mass of callus is produced. If the ratio of kinetin to $IAA$ is increased,what will happen?