GkSeries.com
Home
GK
ENGLISH
CURRENT AFFAIRS
APTITUDE
REASONING
BANKING
UGC NET
COMPUTER SC.
COURSES
Zoology Multiple Choice Questions with Answers
Home
General Knowledge
yawning-occurs
Question
Yawning occurs-
A
due to excess concentration of O
2
in lungs
B
due to excess concentration of CO
2
in blood
C
due to excess concentration of CO
2
in lungs
D
None of the above
View Answer
Answer & Explanation
Answer: Option [B]
⭐ Make GKSeries Your Preferred Source on Google
Add GKSeries as Preferred Source
← Go To First Question
Go To 94 of 331 Q.→
NCERT Class 12 Biology Solved Multiple Choice Questions
