Match the following. Column I Column II 1. Canines i. Blood vessels and nerves 2. Pulp ii. Malaria 3. Virus iii. Cholera 4. Protozoa iv. Tearing food 5. Bacteria v. Polio

1-iv There are four canines in all, two in each jaw. Canines are strong and sharp flesh-eating carnivores, like lions, wolves, etc. 2-i The pulp lies inside the dentine. The tooth is protected on the outer side by the hard enamel, below which lies the dentine. 3-v Viruses cause diseases such as the common cold, influenza, and polio. The virus is a microbe that cannot be seen by the naked eye. 4-ii Protozoa cause diseases such as food poisoning, dysentery, and malaria. They are spread through unclean water, and by insects like the housefly and mosquitoes. 5-iii Bacteria cause diseases such as typhoid, tuberculosis, and cholera. These are caused b y unhealthy surroundings. These are communicable diseases. Column I Column II 1. Canines iv. Tearing food 2. Pulp i. Blood vessels and nerves 3. Virus v. Polio 4. Protozoa ii. Malaria 5. Bacteria iii. Cholera