Class IX

Linkage of amino acids is called a
  1. condensation reaction
  2. oxidation reaction
  3. hydrolysis reaction
  4. reduction reaction
Physical digestion means the
  1. mechanical breakup of food
  2. cellular breakup of food
  3. chewing up of food
  4. mechanical breakdown of food into smaller pieces
C12H22O11 is general formula of
  1. monosaccharide
  2. polysaccharides
  3. disaccharides
  4. trisaccharide
To enable materials locked up in dead organisms, main role is played by
  1. primary consumers
  2. secondary consumers
  3. decomposers
  4. detritivore
Secondary consumers are
  1. plants
  2. herbivores
  3. carnivores
  4. omnivores
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