IGCSE O Level Biology Practice Test 126

Biological Science MCQ (Multiple Choice Questions) PDF - 126

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Biological Science Questions and Answers PDF Download: Quiz 126

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

A) no breathing

B) over breathing

C) under breathing

D) asthma

MCQ 627: From which fungi class ,yeast belongs to

A) unicellular fungi

B) multicellular fungi

C) bicellular fungi

D) tricellular fungi

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

A) inhibiting factors

B) limiting factors

C) expediting factors

D) supporting factors

MCQ 629: Hollow space between xylem is called

A) vessel

B) lumen

C) lignin

D) pits

MCQ 630: Collecting tubules transport waste materials into the

A) renal pelvis

B) ureter

C) hilus

D) medulla

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