Question

Induction of rooting on stems before separating them from parent plant is

• A. Grafting
• B. Layering
• C. Cutting
• D. Root-stem joint
• E. Plant tissue culture

Answer 1

Answer: (B)

Layering

Grafting is a horticulture technique where the living detached portion of the plant is used to regenerate the growth. One plant is selected for its roots and this is called the stock or rootstock. The other plant is selected for its stems, leaves, flowers, or fruits and is called the scion. The joining of scion and stalk is known as inosculation.

The technique of pegging a branch in soil is known as layering. The tip of the branch is pegged into the soil where it develops adventitious roots. Once the roots develop, the branch is separated from the parent body. The branch which develops the root is known as a layer. It is a mode of natural vegetative propagation. For example, jasmine.

Cutting is a technique where the vegetative part is used for the propagation of plant. Cuttings are meristematic in nature so it can easily grow into a new plant.

Root- stem joint appears in the process of grafting. One plant is selected for its roots and this is called the stock or rootstock. The other plant is selected for its stems, leaves, flowers, or fruits and is called the scion.

Tissue culture is a biological technique which involves the development of plant under the controlled condition on a nutrient culture medium of the known composition. The pant developed by the tissue culture are cloned by the process of micropropagation.

So, the correct answer is option B.