Tick-mark the correctly matched pairs of certain animals and their related diseases/habits.

1. Culex — yellow fever
2. Aedes — filariasis
3. Anopheles — malaria
4. Gambusia — eat up mosquito larvae
5. Rat flea — diarrhoea
6. Cockroaches — breed in man-holes

Mention if the following statements are True (T) or False (F)

1. Contamination means entry of germs by insect bite.
2. Sewage is the commonest source of contamination of water in the cities.
3. Cholera is marked by acute diarrhoea and no urination.
4. Typhoid is caused by a type of worm.
5. Mosquitoes are the source of dysentery germs.

Which one of the following is an unhealthy habit?

1. Removing wax from inside the ears
2. Keeping the mouth closed while breathing
3. Sleeping for only 6-7 hours
4. Sharing towels with others

The protozoan that causes malaria is:

1. Entamoeba histolytica
2. Euglena
3. Paramecium
4. Plasmodium