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Last updated date: 06th Dec 2023
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MVSAT Dec 2023

Vegetative propagation in onion occurs by
A. Offset
B. Bulb
C. Sucker
D. Rhizome

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Hint: Vegetative propagation occurs in its leaves , roots, and stem as an asexual method of plant reproduction. This can take place through the fragmentation and regeneration of unique plant vegetative sections.

Complete Answer:
From a specialised reproductive structure (such as a stolon, rhizome, tuber, corm, or bulb), vegetative propagation develops.
- Bulb, a modified stem which is the resting stage of some seedlings, especially perennial monocotyledons. The bulb consists of a relatively large underground bud, usually globe-shaped, with membranous or fleshy overlapping leaves resulting from a short stem. There are two main types of the bulb. One type has thin paper that protects its fleshy leaves, typified by the onion.
- As seen in true lilies, the other type, the scaly bulb, has naked storage leaves, unprotected by any paper covering, making the bulb appear to consist of a series of angular scales.
- Rhizome, also known as creeping rootstalk, is a horizontal underground plant stem capable of generating a new plant's shoot and root systems. Rhizomes are used to store protein and starch. In addition, these modified stems allow the parent plant to reproduce vegetatively (asexually), and for that purpose some plants, such as poplars and different bamboos, depend heavily on rhizomes. Notably, for their culinary ap, the rhizomes of some species, including ginger, turmeric, and lotus, are edible and valued.
- Suckers: Suckers are plant stems that grow from buds on the base of parent plant stems or on roots, also known as root sprouts.
Apple trees, elm and banana trees are examples of plants that use suckers.
- Offset: TheWith the rhizome axis basal to it and its roots, an offset is the lower part of a single culm. The most conventional method of propagating bamboo is to cultivate it.

The correct answer is option(B) Bulb.

Note: Vegetative propagation has many benefits, primarily because the produced offspring are clones of their parent plants. A major drawback of vegetative propagation is that it avoids genetic variation of species that can lead to crop yield reductions.