Developmental Biology

JKPSC Assistant Professor (Zoology) · Zoology · 67 practice questions with answers and explanations: 9 Easy, 58 Medium, 0 Hard.

Sample questions

Sample Easy question 1

Metamorphosis in amphibians is stimulated by:

  1. Thyroxine
  2. Growth hormone
  3. Prolactin
  4. Insulin
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Answer: A. Removal of the thyroid keeps a tadpole in the larval stage.

Sample Easy question 2

Totipotent cells can form:

  1. A complete organism
  2. The placenta alone
  3. Blood cells alone
  4. Nerve cells alone
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Answer: A. The zygote and early blastomeres are totipotent.

Sample Easy question 3

The first 'test-tube baby' (Louise Brown) was born in:

  1. 1978
  2. 1968
  3. 1988
  4. 1958
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Answer: A. Born in England.

Sample Medium question 4

The eggs of mammals are:

  1. Alecithal or microlecithal
  2. Centrolecithal
  3. Telolecithal
  4. Megalecithal
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Answer: A. They have little yolk.

Sample Medium question 5

The 'fate map' of an embryo shows:

  1. The prospective fate of regions
  2. The yolk
  3. The placenta
  4. The sperm
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Answer: A. It was prepared by Vogt.

Sample Medium question 6

Teratogens are agents that:

  1. Cause cancer
  2. Cause fertility
  3. Cause birth defects
  4. Cure diseases
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Answer: C. Thalidomide is an example.

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