Class 8 Science MCQs - Chapter 9
Respiration and Circulation Trivia Questions & Answers PDF Download - 8
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Respiration and Circulation Test Questions and Answers PDF Download: MCQ 8
Blood collects oxygen from inhaled air and gives off carbon dioxide in the
- lungs
- liver
- kidneys
- heart
Respiration which takes place in the absence of oxygen is called
- cellular respiration
- aerobic respiration
- anaerobic respiration
- breathing
There is higher concentration of oxygen in
- inhaled air
- exhaled air
- circulated air
- deoxygenated air
The distance which is travelled by an average red blood cell is equal to
- 1500 km
- 1200 km
- 2100 km
- 5100 km
Heart is made of specialized
- cardiac muscles
- connective tissues
- both a and b
- skeletal sphincters
Class 8 Science Mock Tests
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