IGCSE O Level Biology Practice Test 163

Herbicides: O Level Biology Quiz PDF: Questions and Answers - 163

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Herbicides: O Level Biology Questions and Answers PDF Download: Quiz 163

MCQ 811: Miscarriages in women may be due to intake of

A) carbon dioxide

B) polluted water

C) water containing dioxins

D) DDT

MCQ 812: Number of red blood cells produced every second is

A) 10 million

B) 15 million

C) 20 million

D) 25 million

MCQ 813: Sperm duct from each side passes into the

A) ureter

B) rectum

C) testis

D) abdominal cavity

MCQ 814: Carbohydrates (C_nH_2mO_m) include all but

A) chitin of the arthropods

B) sugar

C) cellulose

D) dietary fiber

MCQ 815: Xylem tissues are also called as

A) wood

B) supportive

C) lignin

D) all of above

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