What are traps?

What is Lens ? What are types of lenses ?

Assertion : Mucous membrane immobilises the micro-organisms in the body. Reason : Microoganisms and dust particles entering the respiratory tract are trapped in the mucus.

What are twins ? What are their types ?

What are chordae tendinae and what is their function?

What is variation? What are its types?

What is vaccine ? What are its types ?

What is vitiligo? What are its symptoms?

What are nitorgenous bases? What are the types?