Tag: asexual modes of reproduction

Vegetative reproduction means reproduction without the involvement of sex cells or gametes. The process of vegetative reproduction can be natural or artificial. Protoplast fusion and plant tissue culture are biotechnological techniques used in the propagation of plants through vegetative cells. In protoplast fusion, the protoplasm of two vegetative cells are fused thus sex cells are not involved. In tissue culture, whole plants can be grown using a small explant made up of the meristematic cell.

Cutting, layering and grafting are some of the techniques of vegetative propagation in plants. In layering, a portion of an aerial stem grows roots while still attached to the parent plant and then detaches as an independent plant. 

Grafting is the technique whereby tissues from one plant are inserted into those of another so that the two sets of vascular tissues may join together.
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. Twin-scaling is practiced by professional growers and skilled amateurs to increase bulbs that would naturally propagate very slowly.
Plant cutting, also known as striking or cloning, is a technique for vegetatively (asexually) propagating plants in which a piece of the stem or root of the source plant is placed in a suitable medium such as moist soil, potting mix, coir or rockwool. The cutting produces new roots, stems or both, and thus becomes a new plant independent of the parent.
Thus, the correct answer is option (A), 'Grafting'.

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.