Micro-organisms cause **** in animals. For example, in humans, bacteria cause **** such as tuberculosis, cholera, typhoid, etc. In cattle, the foot and mouth ** is caused by a virus. Also, several microbes cause ** in plants. For example, the productivity of wheat, orange, apple, etc. is reduced due to microbial ** in plants. Certain microbes, on entering into our body, produce toxic substances. This leads to food poisoning. Some micro-organisms such as spoil our food. For example, bread when left unused under moist conditions gets spoilt by *, producing a white cotton-like growth on the bread.
