A) By giving very less food
B) By giving fat-rich food
C) By adding lot of thyroxine to the water in which they are kept
D) provide them an antithyroid substance like thiourea
Correct Answer: D
Solution :
Thyroxine is important for metamorphosis. Antithyroid substance will reduce thyroxinin tadpole?s body thereby inhibiting metamorphosis.
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