Question

___ have mucus and cilia to trap dust particles present in the air and stops them from entering our body.

• A. Nostrils
• B. Mouth
• C. Tongue
• D. Fingernails

Answer 1

The correct option is A

Nostrils

Nose has two openings which are called nostrils. Nostrils have fine hair called cilia and mucus to trap dust particles present in the inhaled air and stops them from entering our respiratory system.