Gaseous Exchange Sites in Insects — NEET Biology
📚 Practice ConceptWhat is the site of gaseous exchange in an insect?
Which of the following statements regarding the exchange part of the human respiratory system and the diffusion membrane are correct? S1. Alveoli and their ducts together constitute the exchange surface for diffusion of respiratory gases. S2. The diffusion membrane consists of alveolar epithelium, capillary endothelium and a basement substance between them. S3. Extremely small thickness of the diffusion membrane facilitates rapid diffusion of oxygen and carbon dioxide. S4. Increase in thickness of the basement substance enhances the rate of gaseous exchange. S5. Large surface area of alveoli contributes significantly to efficient gaseous exchange. S6. Gaseous exchange across the alveoli occurs by active transport mechanisms. Choose the correct option:
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