Answer:

A farmer wants to propagate a good variety of a crop in a way which maintained all its desirable traits. Which of the following methods should be used?

A. Self-pollination

B. Vegetative propagation

C. Growing seeds produced from this variety

D. Cross-pollinating this crop with another good variety and growing the seeds resulting from the cross

The answer is letter B.

Vegetative reproduction (also known as vegetative propagation, vegetative multiplication or cloning) is any type of asexual reproduction occurring in plants where a new plant develops from a fragment of the parent plant or from a specialized reproductive framework.

Many plants spontaneously replicate in this manner, but they may also be chemically induced. Horticulturalists have developed strategies for the dissemination of asexuals and use vegetative plant parts to reproduce plants. The success rate and the difficulty of spread differ considerably. Monocotyledons typically lack a vascular cambium and are thus more difficult to spread.

Plant propagation is the method of plant reproduction of a genus or cultivar which can be sexual or asexual. It may happen by using vegetative sections of plants, such as leaves, stems and roots, to produce new plants or by emerging from specialized plant parts.

While many plants reproduce by vegetative reproduction, they rarely reproduce exclusively by this process. Vegetative reproduction is not an evolutionary advantage; it does not allow for genetic variation and could contribute to the accumulation of deleterious mutations in plants. Vegetative reproduction is preferred by allowing plants to grow more seeds per resource unit than by seed development. In general, it is easier for adolescents to propagate vegetatively.

While most plants typically propagate sexually, certain plants can reproduce vegetatively or may be induced to reproduce by hormonal therapy. This is because meristematic cells capable of cell differentiation are found in many plant tissues.

. Grafting is also not a complete cloning process, as seedlings are used as rootstocks. Just the top of the plant is clonal in that situation. In some crops, particularly apples, the rootstocks are vegetatively propagated so that the whole grafting can be clonal if both the scion and the rootstock are clones.

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