Biology MCQs

31. Into how many structural regions is the oviduct divided?
[A] Two
[B] Three
[C] Four
[D] None of these

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32. Which of the following is not used as biomass?
[A] Hybrid poplar
[B] Willow algae
[C] Iron nails
[D] Trap grease

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

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34. Which one of the following substances is normally found in urine?
[A] White blood cells
[B] Red blood cells
[C] Blood proteins
[D] Creatinine

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35. In a humans heart the bicuspid valve is situated between ____:
[A] Right auricle and right ventricle
[B] Postcaval and auricle
[C] Left auricle and left ventricle
[D] Right ventricle and pulmonary aorta

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36. Haemoglobin has highest affinity for ____:
[A] Carbon monoxide
[B] Nitrogen
[C] Oxygen
[D] Carbon dioxide

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37. Which of the following are flowerless plants that produce cones and seeds in which seeds are not encased within an ovary?
[A] Hydrophytes
[B] Bryophytes
[C] Gymnosperms
[D] Angiosperms

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38. Which mosquito is the carrier of Zika virus?

[A] Culex
[B] Aedes
[C] Anopheles
[D] Culiseta

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39. Alveoli are balloon like structures within the ____:
[A] Heart
[B] Lungs
[C] Liver
[D] Kidney

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40. Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of ice-creams and jellies?
[A] Chlorella
[B] Agar
[C] Spirullina
[D] Gymnosperms

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