Pathogens are microorganisms - such as bacteria and viruses - that cause disease. Bacteria release toxins and viruses damage our cells. White blood cells can ingest and destroy pathogens. They can produce antibodies to destroy pathogens, and antitoxins to neutralize toxins
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Answer:
Species richness is the number of various species present in an ecological region, community, or scene. Species wealth is the number of species inside a region. For instance, in the event that we have two plots of grounds, An and B, and plot A has 24 types of plants and plot B has 84 types of plants, plot B has higher species richness.
species evenness depicts the overall related abundance or equity of the various species in a territory (comparative plenitude = more uniformity). So if there are 40 foxes and 1000 canines, the network isn't exceptionally even.
T killer cell or Cytotoxic T cells are the cells in animals that are used to destroy bacteria and viruses after combining with lysosomes.
<u>Explanation</u>:
The T cells kills the bacteria and virus. The T cells can easily identify the pathogen when combined with the lysosomes. The activated T cells releases a material called perforin. This substance gets into the walls of the affected cell and punctures its walls. Due to hole in the walls, there happens discharge of fluid and electrolytes, which leads to the death of the cell. The substance secreted is the cytolytic proteins from the lysosome which helps in destruction of the infected cells.
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