Biology MCQs

31. The muscular diaphragm that controls the size of the pupil is __
[A] cornea
[B] ciliary muscles
[C] iris
[D] retina

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32. The Axial skeleton is comprised of __ bones.
[A] 90
[B] 126
[C] 60
[D] 80

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33. Which systems protect our body against disease-causing microbes?
[A] Immune system
[B] Digestive system
[C] Excretory system
[D] Respiratory system

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34. Which of the following are the causes of red water?
[A] Clostridium hemolyticum
[B] Achromobacter anitratum
[C] Escherichia coli
[D] Salmonella typhimurium

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35. Which of the following are bacterial diseases in Humans?
[A] Pulmonary Tuberculosis
[B] Cholera
[C] Leprosy
[D] All of the above

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36. Which of the following is called Mendel’s first law of inheritance?
[A] Law of Dominance
[B] Law of Segregation
[C] Law of Independent Assortment
[D] All of the above

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37. In incomplete dominance__.
[A] Phenotype of both alleles is expressed
[B] Phenotype of only one allele is expressed
[C] Phenotype of neither of the alleles are expressed
[D] Phenotype of both alleles is partially expressed

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38. Carbon monoxide poisoning can be cured by
____:
[A] Drinking lemon-water
[B] Eating butter
[C] Exposing the affected person to fresh oxygen
[D] Consuming multi-vitamin tablet

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39. Panthera pardus is the scientific name of ____:
[A] Panther
[B] Leopard
[C] Lion
[D] Tiger

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40. An Antigen is ____:
[A] The result of Antibody
[B] The stimulus for Antibody formation
[C] The opposite of Antibody
[D] The residue of an Antibody

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