Q158 / 180 · AIIMS 2002 · Zoology

The sites of the first, second and third moulting of the Ascaris larva are respectively

  • A
    soil, lung and intestine
  • B
    liver, stomach and intestine
  • Correct answer
    C
    soil, alveoli and alveoli
  • D
    soil, intestine and lung.

Solution

The development of Ascaris larva takes place outside the body of host in soil and its cleavage starts in shelled eggs. First moulting takes place in soil in shelled egg whereas second and third moulting take place in alveoli of lung. The final moulting takes place in intestine.

Hence, the correct answer is option: 'C'.

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