True and False
1) Exhaled air in humans has a higher concentration of oxygen.
2) The lungs are pink in colour due to blood capillaries present in it.
3) Exhaled air is always warm.
4) The epiglottis is the opening leading into the trachea.
5) Aneorbic respiration takes place in our muscles.
6) Breathing is also called internal respiration.
7) Fish respire through their lungs.
8) Fish respire through their lungs.
9) While performing a physical activity, the breathing rate increases.
10) The size of chest cavity decreases during exhalation.
11) Anaerobic respiration causes cramps in the body.
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Answer:
1-true 2-false 3-true 4-false 5-false 6-true 7 and 8 are true 9 - true 10-true 11-false
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