Which of the following is a specific symptom of the disease long dash scurvy ?

1. Skin inflammation
2. Bleeding gums
3. Drying of cornea
4. Bones turning soft

Distinguish between Rickets and Smallpox on the basis of the characteristic symptoms.

Deficiency of vitamin C causes

1. Night blindness
2. Scurvy
3. Anaemia
4. Polio

Write 'True' and 'False' against each of the following statements :

1. Malaria is an infectious disease.
2. Rickets is caused due to the deficiency of vitamin A.
3. Viruses carry germs from garbage and sewage.
4. Filarial germs are transmitted by the bite of female Culex mosquito.
5. Nightblindness is the disease in which people are not able to see at night even if light is available.