Respiration in Organisms Worksheet-1
(a) Exhalation (b) Inhalation
(c) Breathing (d) All of these
(a) 20 molecules (b) 2 molecules
(c) 38 molecules (d) 382 molecules
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Respiration in Organisms Worksheet-2
At the start of the experiment, the indicator in each test-tube is red.
The indicator changes from red to yellow when exposed to increased levels of carbon dioxide.
What will be the colour of the indicator in each test-tube after two hours?
(a) a → Red; b → red; c → yellow
(b) a → Red; b → yellow; c → red
(c) a → Yellow; b → red; c → red
(d) a → Yellow; b → yellow; c → yellow
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Respiration in Organisms Worksheet-3
(a) In earthworm exchange of gases occurs through the moist skin
(b) The breakdown of glucose in plant cells is similar to that in other living beings
(c) Respiratory organs such as tracheae and spiracles are found in insects as well as lower organisms
(d) Animals such as elephants, frogs, lizards, snakes have lungs in their chest cavities like that of human beings.
(i) In insects, circulating body fluids serve to distribute oxygen to tissues.
(ii) Yeasts respire aerobically, therefore, they are used to make wine and beer.
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