Biology MCQs

31. What is the function of systemic circulation?
[A] oxygenated blood is pumped from the heart to every organ
[B] carrying deoxygenated blood away from the heart
[C] oxygenated blood is supplied to the heart
[D] None of the above

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32. A hormone, which is released by the posterior pituitary:
[A] Oxytocin
[B] TSH
[C] ICSH
[D] Prolactin

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33. What is the scrotal ligament?
[A] an accessory reproductive gland in male mammals
[B] elastic tissue which connects the cauda epididymis to the scrotal sac
[C] remnant of gubernaculum in a fetus
[D] None of these

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34. Which of the following does not affect health?
[A] Genetic disorders
[B] Infections
[C] LifeStyle
[D] Health Insurance

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35. Which is the best example of incomplete dominance?
[A] Wavy hair
[B] Sickle cell anemia
[C] Tay Sachs disease
[D] All of the above

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36. Which legumes have a symbiotic relationship with two nitrogen-fixing bacteria?
[A] Crotalaria juncea
[B] Sesbania aculeata
[C] Sesbania rostrata
[D] Cyamopsis tetragonoloba

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37. An example of abiotic stress is __
[A] pest
[B] insect
[C] drought
[D] vectors

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38. Lungs are the primary organs of ____:
[A] Digestion
[B] Respiration
[C] Constipation
[D] Perspiration

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39. Which of the following is known as animal starch?

[A] Glycogen
[B] Cellulose
[C] Chitin
[D] Glucose

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40. The bark of willow tree is a source of which medicine?
[A] Paracetamol
[B] Aspirin
[C] Antiseptic
[D] Antacid

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