Biology MCQs

1. Which among the following Vitamins helps in clotting of Blood?
[A] Vitamin C
[B] Vitamin D
[C] Vitamin E
[D] Vitamin K

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2. Which among the following blood protein regulates the amount of water in plasma?
[A] Globulin
[B] Albumin
[C] Fibrin
[D] Fibulin

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3. Which among the following is true regarding fraternal twins?
[A] They may look similar but are not genetically identical
[B] They are exactly similar but are not genetically identical
[C] They are exactly similar and are genetically identical
[D] None of the above

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4. Which of the following plant growth hormone was recognized by Japanese scientists?
[A] Auxin
[B] Gibberellins
[C] Abscisic acid
[D] Cytokinin

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5. Which among the following is NOT a true bast fiber?
[A] Jute
[B] Hemp
[C] Flax
[D] Cotton

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6. What is the number of the Chromosomes affected by Turner syndrome?
[A] 44
[B] 45
[C] 46
[D] 47

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7. Who among the following scientists is known for devising four criteria designed to establish a causal relationship between a causative microbe and a disease?
[A] Louis Pasteur
[B] Emil Behring
[C] Ivan Pavlov
[D] Robet Koch

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8. In human body, the largest amount of the carbon dioxide produced by body cells is carried to the lungs as__:
[A] CO2 attached to haemoglobin in the red blood cells
[B] The bicarbonate ion attached to haemoglobin
[C] CO2 gas in solution in the plasma
[D] Bicarbonate ion dissolved in the plasma

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9. Which among the following blood vessels has the smallest diameter?
[A] Arterioles
[B] Capillaries
[C] Venules
[D] Lymphatic

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10. Who among the following has given the theory of evolution of species by natural selection?
[A] Mendel
[B] Darwin
[C] Dalton
[D] Morgan

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These questions are part of GKToday's 40,000+ GK Questions Course in GKToday Android Application which provides more than 40K questions with explanations suitable for all Competitive Exams of India.
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