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Biology CBSE Live product
Class 7 (2025-26)
Life processes in animals
Life processes in animals - Respiration in humans
7.
Breathing and respiration
Question:
3
m.
Select the wrong statement:
1.
Select the incorrect statement regarding inhaled air.
Nitrogen is the most abundant gas we inhale
Carbon dioxide makes up about 78% of the air we breathe in
2.
Select the correct statement regarding ribs during inhalation.
The ribs move down and in during inhalation.
Rib cage expands as the intercostal muscles contract during inhalation
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