Seed formation because in vegetative propagation all methods are used like grafting ,cutting,tissue culture ,etc.

Introduction:
Vegetative reproduction is a form of asexual reproduction in plants where new individuals are produced from vegetative parts of the parent plant, such as roots, stems, and leaves. This method of reproduction does not involve the formation of seeds and is commonly observed in many plant species.

Explanation:
Vegetative reproduction can occur through various methods such as cutting, grafting, and tissue culture. However, it does not take place through seed formation. Let's discuss each method in detail to understand why.

Cutting:
- Cutting is a common method of vegetative reproduction, where a piece of the parent plant is cut and placed in suitable conditions for root formation.
- The cutting develops roots and eventually grows into a new plant, genetically identical to the parent plant.
- This method is widely used in horticulture for propagating plants with desirable traits.
- Cutting is a form of asexual reproduction and does not involve the formation of seeds.

Seed Formation:
- Seed formation is a method of sexual reproduction in plants, where male and female gametes unite to form a zygote within a seed.
- This process involves the fusion of pollen (male gamete) with the ovule (female gamete) and subsequent development of a seed.
- Seeds serve as a means of dispersal and ensure genetic diversity in plants.
- However, vegetative reproduction does not involve the formation of seeds, making it distinct from sexual reproduction.

Grafting:
- Grafting is a technique used to join two different plant tissues to grow them as one plant.
- It involves the union of a scion (the desired plant part) with a rootstock (the rooted plant).
- Grafting allows the combination of desirable traits from different plants, such as disease resistance or improved fruit quality.
- Like cutting, grafting is a form of asexual reproduction that does not rely on seed formation.

Tissue Culture:
- Tissue culture is a laboratory technique used to propagate plants from small plant parts or cells in a sterile environment.
- It involves the growth of plant cells or tissues in a nutrient medium supplemented with growth hormones.
- Tissue culture allows the production of large numbers of uniform plants with desirable traits.
- This method also does not involve the formation of seeds.

Conclusion:
In summary, vegetative reproduction does not take place through seed formation. Instead, it occurs through methods like cutting, grafting, and tissue culture. These techniques allow plants to reproduce asexually and produce genetically identical offspring without the involvement of seeds.

Correct option is b seed formation becoz it is a part of reproduction in plants means seed formation occur in reproduction process. and rest are type of vegetative reproduction.