Biology MCQs

11. Who among the following devised the Technique IVF(In vitro Fertilization)?
[A] Robert Edwards
[B] Dr. Martin Cooper
[C] Edward Jenner
[D] Sir Frank Whittle

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12. Which of the following is the reason behind bleeding through nose in high mountain regions?
[A] The pressure of the blood capillaries is higher than the outside pressure
[B] The pressure at high altitudes is greater than that in the plains
[C] The blood pressure increases at high altitudes
[D] The blood pressure decreases at high altitudes

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13. At which of the following stages the sex of the offspring is determined?
[A] The conception takes place
[B] The sperm fertilises the ovum
[C] The embryo is partially developed
[D] The end of gestation period is near

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14. Which of the following is the ready source of energy available for athletes?
[A] Vitamins
[B] Fats
[C] Proteins
[D] Carbohydrates

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15. Genetic code is made up by the four-letter alphabet forming the pairs?
[A] A—C, C—A, T—G, G—T
[B] A—G, G—A, C—A, T—C
[C] T—G, G—T, A—C, C—A
[D] A—T, T—A, C—G, G—C

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16. Which vitamin is also called as retinol?
[A] Vitamin A
[B] Vitamin C
[C] Vitamin D
[D] Vitamin K

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17. Germplasm theory was given by which of the following biologists?
[A] August Weismann
[B] Georges Cuvier
[C] Arthur Tansley
[D] None of these

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18. What is another name for Koshland’s theory of enzyme action?
[A] Reduced fit theory
[B] Induced fit theory
[C] Enzyme coenzyme theory

[D] Lock and key theory

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19. __ tissues upsurge the length of the plant.
[A] Lateral meristem
[B] Apical meristem
[C] Intercalary meristem
[D] All of the above

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20. On which of the following factor rates of photosynthesis depends?
[A] pH
[B] Pressure
[C] Intensity of Light
[D] Amount of reactance

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