Question

In _______ methods, a branch of the parent plant is buried in the soil.
A. Layering
B. Twin Scaling
C. Cutting
D. Micropropagation

Answer 1

Hint: Propagation or multiplication of plants by seeds is known as 'sexual spread'. Seeds are framed because of effective treatment and a blend of parental gametes. It is an old and simple strategy and is generally utilized for the engendering of yields like fancy annuals, vegetables, restorative, and natural product plants, for example, papaya.

Complete answer:
Layering is a joined technique for proliferation. In this technique, attachments are permitted to create on the secured part of the stem while as yet being joined to the mother plant. After the rise and improvement of the roots, this bit is isolated from the mother plant and permitted to develop as another plant on its root stem. Such a root stem is known as 'layer'.
There are different types of layering. They are classified as:
(i) Simple layering
(ii) Compound or serpentine layering
(iii) Trench layering
(iv) Mound layering or stooling
In basic layering, a fractional tongue-like cut is given on a branch. The branch is then bowed to the ground and the treated bit is secured with soil, keeping the top or terminal bit uncovered. Compound layering is like straightforward layering, aside from the branches that are then again secured and uncovered along their length. Trench layering is fundamentally utilized in natural product plants. Covering the shoots with soil brings about etiolation, so it is otherwise called 'etiolation layering '. Mound layering or stooling technique is continued in plants whose branches are firm and hard to twist. The chosen plant must be at the lethargic stage at the hour of layering.

Hence the correct answer is option A..

Note:
Layering is a method for plant proliferation where a segment of a flying stem develops attachments while still appended to the parent plant and afterward withdraws as a free plant. A layer is the established stem following separation from the parent plant. In this strategy, a part of the plant is secured with some material and provided with water to deliver roots.