IGCSE O Level Biology Practice Test 192
Circulatory system Multiple Choice Questions (MCQs) PDF Download - 192
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Circulatory system MCQ Quiz with Answers PDF Download: Test 192
In a human body, arteries
- carry blood away from body
- carry blood away from heart
- bring blood back to body
- bring blood back to heart
70 to 90% of cell protoplasm is
- hemoglobin
- protoplasm
- water
- energy
Across age, the basal metabolic rate
- changes
- remains constant
- increases
- decreases
More motile gametes are
- male
- female
- both
- gonads
Presence of tubifax worms indicate that
- the parasites are found in the intestine
- cellulose in grass can easily be digested by pri-consumers
- water is highly polluted
- BOD is very low
IGCSE O Level Biology Exam Prep Tests
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