IGCSE O Level Biology MCQs – Practice Test for Exam Prep

Circulatory system Multiple Choice Questions with Answers – PDF Download

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Free "Circulatory system MCQ" App Download: Pulmonary veins carry; MCQ with answers: red oxygenated blood, bluish red deoxygenated blood, deoxygenated blood from heart to the lungs, and oxygenated blood from lungs to heart. Practice Circulatory system Quiz Questions, download Google e-Book (Free Chapter) to strengthen biology training.

Circulatory system MCQs PDF Download – Prep Test

MCQ 1: Pulmonary veins carry:

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

MCQ 2: When an artery dilates the:

lumen becomes constricted
lumen gets wider
person may appear pale
elastic muscles become ineffective

MCQ 3: In mammals, Endothelium is:

elastic in nature
fully permeable
selectively permeable
non-permeable

MCQ 4: When the heart relaxes,:

person respires
peristalsis movements occur
bile is produced
the heart gets filled with blood

MCQ 5: Veins do not require thick walls:

as they do not have to work harder
they are required only occasionally
the blood pressure declines while it gets to veins
the blood pressures is immense

IGCSE O Level Biology MCQs App & e-Book – Circulatory system Practice Tests

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