Question
Biology Question on human health and disease
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
C
soil, alveoli and alveoli
D
soil, intestine and lung
Answer
soil, intestine and lung
Explanation
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.