1. Respiratory organ in polychactes is

a. Skin
b. Gills
c. Para podia
d. Book lungs

2. How many vertebrae present in the Sacral Regions?

a. 12 vertebrae
b. 31 vertebrae
c. 33 vertebrae
d. 37 vertebrae

3. Microscope was invented by?

a. Robert Hooke
b. Robert Brown
c. Leeuwenhoek
d. Darwin

4. Miniature lung refers to?

a. Trachea
b. Alveolous
c. Bronchous
d. Brocnchiole

5. Percentage of lung cancers due to smoking is?

a. 60%
b. 70%
c. 95%
d. 99%