Biological Science Learning App | IGCSE O Level Biology MCQ e-Book PDF
IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology MCQs – Mock Test 126

Biological Science MCQs with Answers PDF Download – Test 126

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Free "Biological Science Learning" App Download (Android & iOS): Too little carbon dioxide (CO2) in lungs leads to; MCQ with answers: over breathing, no breathing, asthma, and under breathing. Practice Respiration in Biology Questions and Answers, Google Book to download free chapter to practice revision methods.

Biological Science MCQs – Mock Test 126 PDF Download

MCQ 626: Too little carbon dioxide (CO2) in lungs leads to:

  1. no breathing
  2. over breathing
  3. under breathing
  4. asthma

MCQ 627: From which fungi class ,yeast belongs to:

  1. unicellular fungi
  2. multicellular fungi
  3. bicellular fungi
  4. tricellular fungi

MCQ 628: Primary factors controlling the rate of photosynthesis are known as:

  1. inhibiting factors
  2. limiting factors
  3. expediting factors
  4. supporting factors

MCQ 629: Hollow space between xylem is called:

  1. vessel
  2. lumen
  3. lignin
  4. pits

MCQ 630: Collecting tubules transport waste materials into the:

  1. renal pelvis
  2. ureter
  3. hilus
  4. medulla

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