1. Structural and functional unit of body is
Tissue
Organ
Cell
All of the above

2. Blue colour of sky is due to
Scattering of light
Reflection of light
Refraction of light
Diffraction of light

3. Small unit of protein is
Fatty acid
Amino acid
Protease
Pepsin

4. Electric current is measured in
Joule
Ampere
Watt
Coulomb

5. Study of plants is known as
Zoology
Botany
Sociology
Genetics