The correct answer is (b) Contracts.
During inspiration, the diaphragm contracts and moves downward to expand the thoracic cavity and allow air into the lungs.
Information Booster:
• When the diaphragm contracts, it increases the volume of the chest cavity, which reduces the pressure inside, allowing air to rush in.
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10 Mins English English150 Questions150 Marks150 Mins English English150 Questions150 Marks150 Mins EnglishConsider the following statements:
1. Plasma membrane is selective permeable
2. In a plant cell DNA is found in nucleus only
3. Ribosomes are present in both the bacteria and eukaryotic cells
4. How many of the statements given above are correct?
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