Question

why grafting is not possible in monocotyledonous plant

Answer 1

In plants there are special tissues called meristametic tissues.
meristematic tissues are of 3 types:
1.Apical Meristem
2.intercalary meristem
3.lateral meristem
Cambium is one of the types of lateral meristem.
In grafting cambium helps in binding the two parts of the stem.Monocots donot posses cambium, hence grafting is not possible in monocots.

Answer 2

Answer:

Grafting is possible in dicots because it posseses cambium. Monocotyledonous plants do not support the process off grafting because of the absence of cambium. Cambium is one of the sorts of horizontal meristem. In uniting cambium helps in restricting the two pieces of the stem.