Antibiotics are the substances that destroy or inhibit the growth of harmful microorganisms, whereas, pathogen refers to a disease causing organism. Vaccine refers to a biological preparation, which is made from modified viruses or bacteria to induce immunity in human beings, and antibodies are present in the blood and helps fighting against infections. 

Fungus is responsible for rust disease in wheat.

Amoeba has an irregular and constantly changing shape and it is found in stagnant water. Its infection in humans can affect liver and causes dysentery.

Yeast is grown on natural sugars present in grains like barley, wheat and rice, and crushed fruit juice in the wine industry.

Anthrax is a skin disease which affects sheep and cow and was discovered by Robert Koch.

Pasteurisation prevents the spoilage of milk. Pasteurisation is the process of removing harmful pathogens from various types of food.

Pea is a leguminous plant. Rhizobium is found in the root nodules of leguminous plants.

Dengue is caused by a virus while malaria is caused by a protozoan. Aedes mosquito - dengue and Anopheles mosquito - malaria, are vectors for these diseases.

Meat and fish are covered with dry salt to check the growth of bacteria.

Influenza, mumps and polio represent the set of diseases caused by viruses in human beings.

Growth of microorganisms is inhibited in very cold conditions.

Anopheles is a mosquito. The rest of them are microorganisms.

Microorganisms decompose dead organic matter. These are used in the preparation of medicines and also in the baking industry. Plastic goods are non-biodegradable and cannot be acted upon by microorganisms.

The sources of these medicines are microorganisms. These medicines kill or stop the growth of a disease.

Water is a good medium for the microorganisms to grow and flourish.