IGCSE O Level Biology Practice Test 3

Stomata and Functions Quiz PDF: Questions and Answers - 3

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Stomata & Functions Questions and Answers PDF Download: Quiz 3

MCQ 11: Guard cells of stoma are

irregular in shape
convex in shape
long and cylindrical in shape
kidney-shaped

MCQ 12: Special kind of protein containing iron is called as

hormones
hemoglobin
fibrinogen
globulins

MCQ 13: In the cardiac system, systole means

a "lub" sound
ventricular relaxation
closure of semilunar valves
a "dub" sound

MCQ 14: The pH of succus entericus is

below 7
neutral
above 7
depending upon the type of food to be digested

MCQ 15: Pulmonary veins carry

red oxygenated blood
bluish red deoxygenated blood
deoxygenated blood from heart to the lungs
oxygenated blood from lungs to heart

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Stomata and Functions MCQs

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