Aves are birds, they are not microscopic microbes.

HIV is pathogenic and causes AIDS.

Bacteriophage is the term for a virus that attacks bacteria.

Amoeba can change shape with the help of its pseudopodia.

Rhizobium can increase soil fertility. It lives inside root nodules of leguminous plants.

Sodium benzoate is a chemical food preservative.

Alexander Fleming discovered penicillin, while he was working with bacteria and a mould called Penicillium notatum.

Sodium metabisulphite is a chemical preservative.

Viruses are said to be in the borderline between living and non-living because they have a genetic material and life processes. They still behave like non-living crystals when outside the host body

'Pulse Polio Programme' was started in India to eradicate the crippling disease polio. In this, children below the age of 5 years are given free the oral polio vaccine (OPV).

This is not a method of food preservation. It causes food spoilage.

Photosynthesis is not a part of nitrogen cycle.

A method of milk preservation in which milk is heated to 70 degrees for 15 to 30 seconds and then suddenly chilled and stored.

Yeast can produce wine from natural sugars.

Antibiotics are not effective against cold and flu because they are caused by viruses.