Asexual Reproduction
Asexual reproduction is a mode of reproduction in which an organism produces offspring without the involvement of gametes (sex cells) or the fusion of genetic material from two parents. This type of reproduction is commonly observed in various organisms, allowing for rapid and efficient reproduction.

Examples of Asexual Reproduction
There are several examples of asexual reproduction in different organisms. Let's discuss each of them:

1. Reproduction in Hydra:
Hydra is a simple aquatic organism that reproduces asexually through a process called budding. In this process, a small bud develops on the body of the parent hydra, which eventually grows and detaches to form a new individual.

2. Reproduction in Amoeba:
Amoeba is a microscopic single-celled organism that reproduces asexually through a process called binary fission. In binary fission, the parent cell divides into two daughter cells, each having an identical set of genetic material.

3. Reproduction in Bacteria:
Bacteria, being unicellular organisms, reproduce asexually through various mechanisms such as binary fission, budding, and spore formation. These processes result in the formation of genetically identical offspring.

Reproduction in Butterfly:
Butterflies reproduce sexually, which involves the fusion of male and female gametes (sperm and egg). The male butterfly produces sperm, while the female butterfly produces eggs. During mating, the male transfers the sperm to the female, which then fertilizes the eggs. This process leads to the development of genetically diverse offspring.

Conclusion
Among the given options, reproduction in butterfly is the only example of sexual reproduction, not asexual reproduction. Sexual reproduction involves the fusion of gametes from two parents, resulting in genetic variation in the offspring. In contrast, asexual reproduction does not involve gametes or genetic recombination, leading to offspring that are genetically identical to the parent. Therefore, option D - "Reproduction in butterfly" is not an example of asexual reproduction.

Because hydra,amobea,bacteria are asexual microorganism and butterfly is sexual reproductive bacteria