Biology MCQs

31. Which of the following are examples of hydrophilic molecules?
[A] sugar
[B] cellulose
[C] starch
[D] All of the above

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32. In winter, at the time of hibernation, Toads maintain breathing through ____:
[A] Lungs
[B] Skin
[C] Both by Skin and Lungs
[D] Buccal cavity

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33. Wilting of plants occurs due to excessive ____:
[A] Respiration
[B] Glutation
[C] Absorption
[D] Transpiration

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34. The elements known as primary nutrients for plants are ____:
[A] Nitrogen, Phosphorus and Potassium
[B] Potassium, Boron and Nitrogen
[C] Nitrogen, Oxygen and Silicon
[D] Nitrogen, Phosphorus and Iron

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35. Which of the digestive organs contains acid?
[A] Stomach
[B] Colon
[C] Small intestine
[D] Appendix

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36. Which type of plants are very tall and have hard and thick brown stem?

[A] Trees
[B] Herbs
[C] Shrubs
[D] None of the above

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37. Night blindness results from the deficiency of ___:
[A] Vitamin-E
[B] Vitamin-A
[C] Vitamin-B2
[D] Glucose

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38. At which stage in its life cycle does the silkworm yield the fibre of commercial use?
[A] Imago
[B] Larva
[C] Egg
[D] Pupa

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39. Which of the following organism possesses characteristics of a plant and an animal?
[A] Euglena
[B] Chlorella
[C] Mycoplasma
[D] Paramecium

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40. Interferons are synthesized in response to ____:
[A] Virus
[B] Fungi
[C] Bacteria
[D] Mycoplasma

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