Biology MCQs

31. Chemical digestion of food occurs by biological catalysts __
[A] enzymes
[B] villi
[C] glycogen
[D] egestion

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32. Which of the following is not a symptom of rinderpest?
[A] dysentery
[B] fever
[C] overcrowding
[D] blue urine

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33. Which chemical fertilizer is needed for better rhizobial nitrogen fixation?
[A] Phosphorus
[B] Potassium
[C] Calcium
[D] Sodium

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34. Who was the father of the green revolution?
[A] Verghese Kurien
[B] Herbert Boyer
[C] Har Gobind Korana
[D] Norman Borlaug

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35. The ____ is the stem-like part of the leaf that joins the blade to the stem, is known as:

[A] Vein
[B] Petiole
[C] Stipules
[D] Midrib

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36. Heart attack occurs due to
____:
[A] Impairment of hearts working due to unknown reasons
[B] Bacterial attack on the heart
[C] Lack of supply of blood to the heart itself
[D] Stopping of heart beat

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37. In coriander, the useful parts are
____:
[A] Leaves & flowers
[B] Flowers & dried fruits
[C] Roots & leaves
[D] Leaves & dried fruits

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38. When a single gene controls the expression of more than one character, it is said to be ___:
[A] Heterotrophic
[B] Autotrophic
[C] Pleiotropic
[D] Allotropic

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

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