question_answer

For the successful graft the adhesion between the Scion and Stock is essential. In your view, which of the following is the earliest event towards a good graft? I. Production of plasmodermata in the cell at the interface of Scion and Stock. II. Coordinated differentiation of vascular tissue between the Stock and Scion. III. Regeneration of cortex and epidermis over the union of Stock and Scion. IV. Production of callus tissue between the cells of Scion and Stock.

A) I and II                 

B) II and III

C) II and IV             

D) Only IV