Biology MCQs with answers Page - 46

Here, you will find a collection of MCQ questions on Biology. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. In mammals, fertilisation takes place in the

  • (A) uterus
  • (B) fallopian tubes
  • (C) ureter
  • (D) ovary

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Q. DNA replication means

  • (A) DNA → DNA
  • (B) Autocatalytic function of DNA
  • (C) DNA → RNA
  • (D) Heterocatalytic function of DNA

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Q. Other than spreading malaria, Anopheles mosquitoes are also vectors of

  • (A) yellow fever
  • (B) dengue fever
  • (C) encephalitis
  • (D) filariasis

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Q. In brown-air cities atmospheric hydrocarbons and nitrogen oxides from automobiles and power plants react in the presence of sunlight, forming a single or a number of secondary pollutants as

  • (A) formaldehyde
  • (B) peroxyacylnitrate
  • (C) ozone
  • (D) all of these.

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Q. Body temperature in homeotherms is regulated by:

  • (A) hypothalamus
  • (B) thyroid gland
  • (C) hypothalamo-hypophyseal complex
  • (D) pituitary gland

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Q. Which of the following plant hormone was first isolated from a fungus?

  • (A) Zeatin
  • (B) Ethylene
  • (C) Kinetin
  • (D) Gibberellic acid

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Q. A highly evolved human brain contains approximately

  • (A) 10,000 million nerve cells
  • (B) 10,000 nerve cells
  • (C) 100 million nerve cells
  • (D) 1,00,000 nerve cells

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Q. Consider the following biomolecules:
1.Vitamin A
2.Enzyme
3.Testosterone
4.DNA The biomolecules that are made in the human body are:

  • (A) 1, 3 and 4 only
  • (B) 1, 2 and 4 only
  • (C) 1, 2 and 3 only
  • (D) 2, 3 and 4 only

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Q. Consider the following pairs:
1.Aristotle-Father of Biology
2.Darwin-Theory of Evolution
3.Mahrishi Charak-Father of Ayurveda
4.Hippocrates-Father of medicine Which of the above pair/s is/are not correctly matched?

  • (A) 1 and 4
  • (B) Only 3
  • (C) 1 and 3
  • (D) Only 4

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Q. Monocot root differs from dicot root in having

  • (A) Scattered vascular bundles
  • (B) Well developed pith
  • (C) Radially arranged vascular bundles
  • (D) Open vascular bundles

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