For the metamorphosis of tadpoles


For the metamorphosis of tadpoles which of the following elements must be available in water?

(a) Chlorine

(b) Carbon

(c) Sulphur

(d) Iodine


(d) For metamorphosis of tadpoles, iodine should be present in water. This is because metamorphosis is brought about by thyroxine hormone that

requires the presence of iodine for its production by thyroid gland.

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