Draw a labelled sketch of a typical biogas plant.

OR

(a) Name the causative organisms for the following diseases:

(i) Elephantiasis

(ii) Ringworm

(iii) Amoebiasis

(b) How can public hygiene help control such diseases?

Figure. A typical biogas plant

OR

(a)

i. Wuchereriabancroftiand Wuchereriamalayi

ii. Microsporum, Trichophyton and Epidermophyton

iii. Entamoebahistolytica

(b)

• Elephantiasis can be prevented by periodic cleaning and disinfection of water reservoirs, pool, cesspool, tanks, and prevention from mosquito breeding.

• Ringworm includes personal hygiene like keeping the bodyclean.

• Amoebiasis can be prevented by observing standard practices of hygiene in public catering and by consumption of clean drinking water, food, vegetables, fruits, etc.

Note:

For the prevention and control of many infectious diseases, maintenance of personal and public hygiene is very important.