Define

  1. Pulmonary Respiration
  2. Branchial Respiration
  3. Tracheal Respiration
  4. Cutaneous Respiration

  1. Pulmonary respiration is the respiration through lungs. For example: Humans, etc.
  2. Branchial respiration is the type of respiration which occurs through gills. For example -respiration in fishes.
  3. Tracheal respiration  is the type of respiration which occurs through gills trachea.   Example - insects
  4. Cutaneous respiration means diffusion of gases through the skin. This type of respiration occurs in insects which have no respiratory organs.

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