Match the items in column A with the items in column B Column A Column B 1. Stomata (a) Earthworm 2. Gills (b) Man 3. Tracheal tubes. (c) Plants 4. Lungs (d) Fish 5. Skin (e) Cockroach (f) Amoeba

1. (c) Breathing takes place through tiny holes or openings called stomata present under the leaves. Stomata receive air and the exchange of gases takes place inside the plant cells. 2. (d) Most aquatic animals such as fish use gills for breathing. Gills are capable of deriving oxygen dissolved in water. 3. (e) Air holes called spiracles are present in insects such as grasshoppers and cockroaches. Air enters the insect’s body through the spiracles and is carried through tracheal tubes. 4. (b) Lungs are human’s respiratory organs. Lungs are two and are present in the chest cavity of the body. 5. (a) Multicellular organisms such as earthworms, frogs and leeches exchange oxygen and carbon dioxide through their moist skin. Column A Column B 1. Stomata (c) Plants 2. Gills (d) Fish 3. Tracheal tubes. (e) Cockroach 4. Lungs (b) Man 5. Skin (a) Earthworm