Question

Q.11. Given below are few situations:

(i) Geeta of Class IX was having common cold. She sits with Sarika who also develops

the diseases.

(ii) Animesh of Class IX shifted to a new residence, with his family, where water

purification system has not been installed yet. He develops cholera and dysentery.

(iii) Associate these situations with their mode of transmission and assign

appropriate category to them

Answer 1

Common cold I'd a transmissible disease and cholera develops due to impure or dirty water....

Answer 2

i) Mode of transmission: Air.

Common cold is spread by virus.

ii) Mode of transmission: Contaminated water.

Cholera and dysentery are spread by bacteria.

Hope it helps! :)