Tag: reproduction in angiospermic plants

Layering is a means of plant propagation in which a portion of an aerial stem grows roots while still attached to the parent plant and then detaches as an independent plant.
Twin scaling is a method of propagating plant bulbs.
A cutting is a vegetative plant part which is severed from the parent plant in order to regenerate itself, thereby forming a whole new plant.
Micropropagation is the practice of rapidly  multiplying stock plant material to produce a large number of progeny plants, using modern tissue culture methods.
Thus, the correct answer is option (A), 'Layering'.

• A stem cutting is plant stem including a tip (e.g. shoot, twig, sucker, ) or a portion of a stem without the apex that includes one or more nodes removed from a parent plant and capable of rooting; A stem cutting is used to grow a whole new plant, which is also known as cloning.
• It is the most commonly used method to propagate many woody ornamental plants such as rose and Champa.

Many types of plants, like herbaceous plants, including roses are frequently propagated by cuttings. A cutting is a vegetative plant part, which is severed from the parent plant in order to regenerate itself, thereby forming a whole new plant.
Thus, the correct answer is option (B), 'Cutting'.

Grafting is a method in which two or more plant parts are joined such that they grow as a single plant. The upper plant part which is grafted onto the stump of another plant is called the scion. The lower part of plant on which scion is grafted is called as rootstock. Bulbil is a bulb-like structure present on the axil of a leaf. It is involved in vegetative propagation.

Coffee plants can be propagated form seeds or by cuttings or air layers.
Stem cuttings or sections of the stalks called seeds or seed pieces propagate sugarcane.
Citrus can be propagated by budding, layering and cutting.
Thus, the correct answer is option (D), 'All of these'.

Cows, cat undergoes sexual reproduction. Peas also undergo sexual reproduction.
Sugarcane are propagated vegetatively, which is an asexual means of reproduction. The propagation of sugarcane is by cutting.
Thus, the correct answer is option (C), 'Sugar cane'

Grafting is simply inserting a portion of one plant (usually a shoot the scion) onto another the host so that they grow together to make a single plant. Grafting is very common in commercial horticulture virtually all mass-marketed roses are grafted onto a vigorous rootstock of a different variety many fruit trees and other ornamentals are treated similarly. Quality of fruits produced wilI depend upon genotypes of scion only, stock is just acting as a support.

Grafting is a technique whereby tissues from one plant are inserted into those of another so that the two sets of vascular tissues may join together.
The plant that is selected for its roots is called the stock while the other plant, selected for its stems, leaves, flowers or fruits is called the scion
Thus, the correct answer is option (B), 'Scion'.

Scion is the part of the grafted plant that gives rise to the plant shoot that will, later on, produce all of the plant parts such as leaves, stems, flowers, and fruits. Everything above the scion is cut off in the spring hence all nutrients and water absorbed by the roots becomes available to the growing scion. Thus the correct answer is option C.