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RESPIRATION IN ORGANISM

• Respiration is the process by which oxygen is taken in and gives out carbon dioxide

• It involves inspiration and expiration• The structure of respiratory organs and the

process become more complex as the complexity in the structure of organisms increases

AMOEBA

Amoeba does not possess specific respiratory organs .The cell membrane act as the respiratory surface through which oxygen enters and carbon dioxide leaves out the body

EARTHWORM

• Skin is the respiratory organ of the earthworm which contains many blood capillaries. Oxygen diffuses into the blood and carbon dioxide from blood diffuses out through moist skin. Hemoglobin is contained in the plasma

COCKROACH

• The respiratory organ of the cockroach is a network of tubules spread all over the body and is known as trachea ,which opens to the outside through openings called spiracles. Oxygen and carbon dioxide diffuses directly in and out of the tissues. Blood does not play any role in the process of gas exchange.

SCROPION

• Book lungs are the respiratory organ of the scorpion and resembles a half opened book. They are seen towards the posterior end of the abdominal cavity. Oxygen from air enters through the openings and dissolves into the body fluid and carbon dioxide is expelled from the body fluid

FISH

• Gills are the respiratory organ of fish which are rich in capillaries. Oxygen from water flows over gills diffuses into the blood and carbondioxide diffuses into the water.

FROG

• Frogs are amphibian which can breathe in both air and water. Moist skin, buccal cavity and lungs are the respiratory organs of frog. But tadpoles ,the larvae of frog breathe through gills

THANKS

Presented by

Sruthi L Nair