Current Affairs Quiz 2024
GK
Courses
Aptitude
Banking
English
UGC NET
Zoology Multiple Choice Questions with Answers
Home
/
General Knowledge
/
yawning-occurs
By
Gkseries
see more questions
Q.
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
Answer & Explanation
Answer: Option [B]
DOWNLOAD CURRENT AFFAIRS PDF FROM APP
← Go To First Question
Go To 94 of 331 Q.→
NCERT Class 12 Biology Solved Multiple Choice Questions
Click Here to Read more questions