The first evidence about the existence of viruses was provided by (B) Ivanowsky.

Here's a brief step-by-step explanation:

1. Louis Pasteur was a French biologist who is known for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization. He did not provide the first evidence of the existence of viruses.

2. Ivanowsky, a Russian botanist, is the correct answer. In 1892, he provided the first evidence about the existence of viruses when he studied a disease in tobacco plants. The disease was caused by what is now known as the Tobacco mosaic virus. He discovered that the agent of infection remained infectious even after being passed through a porcelain filter designed to remove bacteria.

3. W.M Stanley is known for his work on the tobacco mosaic virus, for which he received the Nobel Prize in Chemistry in 1946. However, he did not provide the first evidence of the existence of viruses.

4. Charles Chamberland, a French microbiologist, is known for his work in developing autoclave and the Chamberland filter or Chamberland-Pasteur filter, a device that can remove bacterial cells from solutions. However, he did not provide the first evidence of the existence of viruses.

Question

The first evidence about the existence of viruses was provided by (B) Ivanowsky.

Here's a brief step-by-step explanation:

1. Louis Pasteur was a French biologist who is known for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization. He did not provide the first evidence of the existence of viruses.

2. Ivanowsky, a Russian botanist, is the correct answer. In 1892, he provided the first evidence about the existence of viruses when he studied a disease in tobacco plants. The disease was caused by what is now known as the Tobacco mosaic virus. He discovered that the agent of infection remained infectious even after being passed through a porcelain filter designed to remove bacteria.

3. W.M Stanley is known for his work on the tobacco mosaic virus, for which he received the Nobel Prize in Chemistry in 1946. However, he did not provide the first evidence of the existence of viruses.

4. Charles Chamberland, a French microbiologist, is known for his work in developing autoclave and the Chamberland filter or Chamberland-Pasteur filter, a device that can remove bacterial cells from solutions. However, he did not provide the first evidence of the existence of viruses.

Knowee AI · Accepted Answer

The first evidence about the existence of viruses was provided by (B) Ivanowsky.

Here's a brief step-by-step explanation:

1. Louis Pasteur was a French biologist who is known for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization. He did not provide the first evidence of the existence of viruses.

2. Ivanowsky, a Russian botanist, is the correct answer. In 1892, he provided the first evidence about the existence of viruses when he studied a disease in tobacco plants. The disease was caused by what is now known as the Tobacco mosaic virus. He discovered that the agent of infection remained infectious even after being passed through a porcelain filter designed to remove bacteria.

3. W.M Stanley is known for his work on the tobacco mosaic virus, for which he received the Nobel Prize in Chemistry in 1946. However, he did not provide the first evidence of the existence of viruses.

4. Charles Chamberland, a French microbiologist, is known for his work in developing autoclave and the Chamberland filter or Chamberland-Pasteur filter, a device that can remove bacterial cells from solutions. However, he did not provide the first evidence of the existence of viruses.

The First evidence about the existence of viruses were provided by*1 point(A)Louis Pasteur(B)Ivanowsky(C) W.M Stanley(D)Charles Chamberland

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The First evidence about the existence of viruses were provided by

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