Class VIII

Insects breath through small holes in their body called
  1. lungs
  2. air sacs
  3. stomata
  4. spiracles
There is higher concentration of oxygen in
  1. inhaled air
  2. exhaled air
  3. circulated air
  4. deoxygenated air
Human beings have specialized structure to carry out exchange of gases called
  1. respiratory system
  2. digestion system
  3. nervous system
  4. circulatory system
De-oxygenated blood from parts of body is received by
  1. right side
  2. left side
  3. atrium
  4. ventricle
A sheet of muscles which contracts or flatten when we breath is called
  1. diaphragm
  2. ribs
  3. lungs
  4. stomach
Time Elapsed

HR : MIN : SEC
Question Answered
0
Score out of 100
0

Get Started!

we provide the best
services to our students

AmazingCounters.com Views

 

LKG - 12th

Rs 1,999  Annual
Plan
TOP