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A is an insect which breeds in ponds of stagnant water. The egg of this insect produces a worm like form B which is entirely different in appearance from the adult insect. The form B undergoes a change C and gets converted into insect A. The female of insect A is a carrier of protozoan D which spreads a disease in humans. (a) What are A, B, C and D ? (b) Name another insect which also undergoes change C. |
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Answer» A is an insect which breeds in ponds of stagnant water. The egg of this insect produces a worm like form B which is entirely different in appearance from the adult insect. The form B undergoes a change C and gets converted into insect A. The female of insect A is a carrier of protozoan D which spreads a disease in humans. (a) What are A, B, C and D ? (b) Name another insect which also undergoes change C. |
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