Question
Compare respiration in humans, earthworms, and fish.
✓
Answer
| Feature | Humans | Earthworms | Fish |
| Respiratory Organ | Lungs with alveoli | Moist skin | Gills |
| Environment | Terrestrial (land) | Terrestrial (land) | Aquatic (water) |
| Mechanism | Inhalation and exhalation through nasal passages, windpipe, and lungs | Gas exchange through the skin | Water flows over gills, oxygen extracted, carbon dioxide released |
| Gas Exchange | Oxygen from air into blood, carbon dioxide from blood into air | Oxygen from air into blood, carbon dioxide from blood into air | Oxygen from water into blood, carbon dioxide from blood into water |
| Adaptations | Lungs with large surface area (alveoli) for efficient gas exchange | Moist skin to facilitate gas diffusion | Gills with many filaments and lamellae to increase surface area |
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