Question

in cleft grafting, one side of the scion is cut thicker than the other ______.
a. so that the scion is handled more easily
b. resulting in close contact with the cambium of the understock
c. so that the scion makes more rapid growth
d. all of the above

Explanation:

In cleft grafting, the purpose of cutting one side of the scion thicker is to ensure close contact with the cambium of the understock (this is crucial for successful grafting as cambium contact facilitates vascular connection). Option a is incorrect as handling ease isn't the reason. Option c is incorrect as this cut doesn't directly cause more rapid growth. So the correct reason is option b.

Answer:

b. resulting in close contact with the cambium of the understock