Biology MCQs

31. Which muscles are found in your belly and sometimes called “abs”?
[A] Pectorals
[B] Quadriceps
[C] Deltoids
[D] Rectus abdominus

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32. Which of the following is a function of the heart?
[A] makes blood cells
[B] to pump blood throughout the body
[C] Both 1 and 2
[D] Neither 1 nor 2

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33. Seminiferous tubules develop central lumen after __
[A] Old age
[B] Prepuberal time
[C] Birth
[D] Puberty

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34. Which of the following is the method of cellular defense in animals and plants?
[A] Recombinant DNA technology
[B] RNA interference
[C] Immune response
[D] Mutation

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35. Flowers emit fragrance to ____:
[A] Drive away flies
[B] Purify air
[C] Attract insects
[D] All of the above

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36. Which one of the following is the ideal food for newborn babies?
[A] Milk
[B] Water
[C] Honey
[D] Sugar

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37. Why do the plant closes stomata when it does NOT need carbon dioxide for photosynthesis?
[A] To store carbon dioxide
[B] To prevent water loss
[C] To release stored oxygen
[D] None of the above

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38. Wisdom teeth is the ____:
[A] 1st molar teeth
[B] 2nd molar teeth
[C] 3rd molar teeth
[D] 4th molar teeth

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39. Jonas Salk invented the vaccine for ____:
[A] Polio
[B] Hepatitis
[C] Typhoid
[D] Cholera

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40. How many canine teeth does an adult human have?
[A] 8
[B] 4
[C] 3
[D] 2

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