Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Biology Human Physiology Digestive System
The flap like valve which prevents the food from entering the wind pipe is called
1
Oesophagus
2
Epiglottis
3
Mitral valve
4
More than one of the above
5
None of the above