Biology MCQs

1. What is the number of “True Ribs” in human body?
[A] 12
[B] 14
[C] 16
[D] 18

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2. What is the main function of Lymphocytes?
[A] Production of Antibodies
[B] Production of Antigens
[C] Production of White Blood Cells
[D] All of the above

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3. Which among the following correctly defines Hypoglycemia ?
[A] Lower than normal level of thyroxin secretion
[B] Lower than normal level of protein
[C] Lower than normal secretion of one or more of the eight hormones normally produced by the pituitary gland
[D] Lower than normal level of blood glucose

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4. Which among the following helps to determine the character of a cell?
[A] Nucleus
[B] Chromosomes
[C] Genes
[D] Plasma

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5. Hodophobia is the fear of which of the following?
[A] Sleeping
[B] Travel
[C] Drugs
[D] Cattle

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6. All cells contain the same genetic information, yet cells other than stem cells can not differentiate into various tissues. What is the possible reason for this?
[A] As cells develop their genetic makeup changes.
[B] As cells develop some genes are turned off permanently.
[C] Stem cells are the only cells that do not have an X or Y chromosome and can therefore go into either a male or female.
[D] Stem cells are the only cells that can be implanted

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7. Which of the following is the hybrid between a horse and a donkey?
[A] Mule
[B] Hule
[C] Tigon
[D] Zorse

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8. Xylem helps in transportation of which of the following?
[A] Food
[B] Water
[C] Both food and water
[D] Nutrients

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9. Retina in the eyes acts as which of the following parts of the camera? (UPSC Prelims 1982)
[A] Lens of the camera
[B] Shutter of the camera
[C] Film of the camera
[D] None of these

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10. Which of the following secrete the hormones necessary for the development of the human body? (UPSC Prelims 1983)
[A] Thyroid gland
[B] Pituatory gland
[C] Parathyroid gland
[D] Exocrine gland

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