Class VIII

Yeasts  are ____organisms.
  1. Single celled
  2. Double celled
  3. Tripple celled
  4. None of these
Smoking causes
  1. Stomach cancer
  2. Lung cancer
  3. Nausea
  4. All of these
Breathing involves the movement of the______ and the rib cage.
  1. Diaphragm
  2. Lungs
  3. Nose
  4. None of these
The process of breakdown of food in the cell with the release of energy is called____?
  1. Cellular respiration
  2. Tissue
  3. Aerobic respiration
  4. Anaerobic respiration
The earthworms breathe through their ___.
  1. Lungs 
  2. Skins
  3. Nose
  4. None of these
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