Name the plant hormone that is produced in the roots and diffuses to other parts of the plant.

In plants rapidly dividing cells are localized in special regions called

In which of the following differentiation is not seen.

Growth rings are prominent in the trees seen in

Gibberellins was first discovered by 

The capability of plant cells that is used in tissue culture is

Which one of the following phytohormone is also called IAA?

Cell elongation in internodal regions of green plants takesplace due to 

Apical dominance is seen in

The hormone, which controls cell division and cell differentiation, is