Which of the following processes lead to formation of callus in plant tissue culture carried out in a laboratory?

The concentration of auxin is highest in ___

The hormone responsible for femaleness in cucumbers is ____

Cells of which of the following plant organs do not undergo differentiation?

Movement of auxin is centripetal.

Plants are able to measure the duration of exposure to light.

The role of PGRs is a kind of intrinsic control.

The growth rate is generally of how many types?