Question

1: The mouth of a human being has two pipe openings one each for air and food. Why does food enter only the food pipe and not the wind pipe? Find out.

2: Cows and buffaloes are seen chewing even when they are not grazing or eating anything. Why?​

Answer 1

Answer:

1) Epiglottis seperates food pipe (oesophagus) and wind pipe (trachea) to prevent food entering into lungs and getting choked.

2) The phenomenon is called rumination. This physical process improves digestion rate allowing for higher levels of feed intake, thus greater nutrient input.