Human Biology Learning App | IGCSE O Level Biology Notes e-Book PDF

IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology Competitive Exam MCQs – Mock Test 339

Human Biology Notes Questions with Answers PDF Download – Test 339

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Study Human Biology Notes Questions and Answers PDF (Human Biology Quiz Answers PDF e-Book) download Ch. 7-339 to study IGCSE O Level Biology Practice Tests. Learn Effects of Human Activity on Ecosystem MCQ Questions PDF, Human Biology Multiple Choice Questions (MCQ Quiz) for biology digital preparation. Download the Human Biology Notes App: Free IGCSE O Level Biology Learning App to study human biology, habitat specialization due to salinity, structure of a wind pollinated flower, o level 2014 biology test prep to practice examination techniques.

Free "Human Biology Notes" App (Android & iOS) with MCQ: In humans, the sensitivity of respiratory diseases, eyes, and air passages is experienced due to; with answers: lead, carbon dioxide, sulphur dioxide, and carbon monoxide to practice examination techniques. Learn Effects of Human Activity on Ecosystem Questions and Answers, Apple Book to download free chapter to strengthen biology preparation.

Human Biology MCQs – Mock Test 339 PDF Download

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

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