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NEETZoologyHuman Reproduction

Stage of Development Description A. Zygote 1. Solid ball of cells B. Morula 2. Single-celled stage C. Blastocyst 3. Hollow ball of cells D. Gastrula 4. Formation of germ layers

Options

  1. AA -2 , B -4 , C - 3, D -1
  2. BA -3 , B -1 , C -2 , D -4
  3. CA -1 , B - 3, C - 4, D -2
  4. DA - 2, B - 1, C - 3, D - 4

Correct answer

D. A - 2, B - 1, C - 3, D - 4

Step-by-step solution

Zygote: Single-celled stage after fertilization. Morula: Solid ball of cells formed after several cell divisions. Blastocyst: Hollow ball of cells that implants in the uterus. Gastrula: Stage where germ layers are formed.

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