Which of the following must be present in water for metamorphosis of tadpole into adult frog?
Answer
Correct Answer : d ) Iodine
Explanation :Iodine must be present in water for the metamorphosis of tadpole into adult frog. Tadpole (larva of frog) cannot develop into an adult frog if the water in which the tadpoles are growing does not contain sufficient iodine because thyroxine hormone controls metamorphosis of frogs and its production requires the presence of iodine in water.
Hence, (d) is the correct answer.
Questions related to Science are generally asked in exams like UPSC CSE, State PCS, SSC CGL, SSC CHSL, SSC CPO, RRB NTPC, CDS, UP SI, etc.
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