IGCSE O Level Biology MCQs App | Molecular Biology MCQs e-Book PDF

IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology MCQs – Mock Test 184

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Molecular Biology MCQ – Mock Test 184 PDF Download

MCQ 916: Ozone depletion can be prevented with:

  1. use of scrubbers in factory chimneys
  2. acidic waste is treated with alkalis
  3. fossil fuels are used in factories
  4. lower consumption of chlorofluorocarbons-based products

MCQ 917: In plants, venation refers to transporting food:

  1. for storage
  2. in shoot
  3. through vein network
  4. through phloem

MCQ 918: Wing becomes a flattened extension of testa in:

  1. plumed fruits
  2. plumed seeds
  3. winged seeds
  4. winged fruits

MCQ 919: The purpose of vasodilation and vasoconstriction is to:

  1. release enzymes
  2. regulate the body temperature
  3. secrete more bile
  4. help liver to detoxify benzoic acid

MCQ 920: Enzymes vital for aerobic respiration (with O2) are found in:

  1. platelets
  2. centriole
  3. nucleus
  4. mitochondria

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