A) thyroxine
B) insulin
C) glucagon
D) adrenalin
Correct Answer: A
Solution :
The changes that take place during transformation of larva into adult are collectively called metamorphosis. During metamorphosis of frog tail disappearance starts, homy jaws are replaced by bony jaws, gills disappear and lungs become functional. Thyroxine hormone or iodine is needed for metamorphosis of frog. Insulin decreases the level of glucose in the blood. Glucagon stimulates the liver to convert stored glycogen into glucose. Adrenaline is called emergency hormone and secreted from adrenal medulla.
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