Question :

Which of the part of tongue bears cells for sour taste
 

Option 1:

Front

Option 2:

Back

Option 3:

Sides

Option 4: Middle

Question :

The colour of human skin is produced by
 

Option 1:

Hemoglobin

Option 2:

Insulin

Option 3:

Adrenaline

Option 4: Melanin

Question :

The carbon dioxide content in the air that we exhale is about
 

Option 1:

4%

Option 2:

8%

Option 3:

12%

Option 4: 16%

Question :

Pinna (external ear) is present in

Option 1:

Amphibians

Option 2:

Fish

Option 3: Mammals

Option 4: Reptile

Question :

Prawn heart carries:

Option 1:

No blood

Option 2:

Deoxygenated blood

Option 3: Oxygenated blood

Option 4: Mixed Blood