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IGCSE O Level Biology Certification Exam Tests

IGCSE O Level Biology Practice Test 339

Human Biology Quiz PDF: Questions and Answers - 339

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Human Biology Questions and Answers PDF Download: Quiz 339

MCQ 1691: In humans, the sensitivity of respiratory diseases, eyes, and air passages is experienced due to

  1. carbon dioxide
  2. lead
  3. carbon monoxide
  4. sulphur dioxide

MCQ 1692: PH (power of Hydrogen) of about 8 is characteristic of

  1. sea water
  2. fresh water
  3. stagnant water
  4. lime water

MCQ 1693: Dull colored, smaller and non-scented flowers rely upon

  1. insect-pollination
  2. wind pollination
  3. self pollination
  4. cross pollination

MCQ 1694: Fish can come to the surface of the water for air-breathing in waters of

  1. low oxygen concentration
  2. high oxygen concentration
  3. low hydrogen concentration
  4. high hydrogen concentration

MCQ 1695: Carboxyhemoglobin is of

  1. bright red
  2. purplish red
  3. bright pink
  4. dark red

IGCSE O Level Biology Exam Prep Tests

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Human Biology App (Android & iOS)

Human Biology App (Android & iOS)

O Level Biology App (Android & iOS)

O Level Biology App (Android & iOS)

SAT Biology App (Android & iOS)

SAT Biology App (Android & iOS)

10th Grade Biology App (Android & iOS)

10th Grade Biology App (Android & iOS)