10th Class Chapter No.1
Biology MCQs Online Quiz
All MCQs Selected from Old Board Papers
Best MCQs for Board Examination
Total MCQs ( in this Quiz ) = 50
76. Which organ is made up of air-carrying tubes and tiny sacs?
A. the brain
B. the lungs
C. the stomach
D. the diaphragm
Answer:
B. the lungs
77. Which of the following are the stages of respiration in correct order?
A. gaseous transport, breathing, tissue respiration, cellular respiration
B. breathing, gaseous transport, tissue respiration, cellular respiration
C. gaseous transport, tissue respiration, cellular respiration, breathing
D. breathing, tissue respiration, cellular respiration, gaseous transport
Answer:
B. breathing, gaseous transport, tissue respiration, cellular respiration
78. Which of the following movement is involuntary?
A. walking
B. heart movement
C. legs movement
D. jumping
Answer:
B. heart movement
79. In normal circumstances, human breathe:
A. 16 – 20 times per minute
B. 17 – 20 times per minute
C. 18 – 20 times per minute
D. 19 – 20 times per minute
Answer:
A. 16 – 20 times per minute
80. The rate of breathing is controlled by the
A. respiratory centre in the brain
B. digestive centre in the brain
C. circulatory centre in the brain
D. respiratory centre in the spinal cord
Answer:
A. respiratory centre in the brain
