18. Which of the following techniques takes a section of the root and joins it to another
plant?
A. cutting
B. grafting
C. splitting
D. air layering



Answer :

Final answer:

Grafting joins root section to another plant; Layering forms roots on stems; Cutting creates new plants from stem portions


Explanation:

Grafting is a technique in which a section of the root (the stock) is joined to another plant's stem (the scion) to create a new plant. This method allows favorable stem and root characteristics to be combined.

Layering is another method where stems attached to a parent plant may develop roots, allowing them to become new plants. This process can be assisted by plant propagators to enhance successful propagation.

Cutting involves placing a portion of a stem with nodes and internodes in moist soil to root and produce new plants.


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