If thyroid gland is completely removed from a tadpole, it will
Die immediately
Turn into a giant frog
Turn into a dwarf frog
Remain tadpole throughout its life
The process of spermatogenesis and sperm formation is under the regulatory influence of
$A$ : Insulin is not given orally.
$R$ : Insulin hormone is lipid soluble and directly enters inside the cell membrane.
Match the source gland with its respective hormone and function and select the correct option.
Which one of the following flows directly into the blood from seat of its production to act on an organ away from it
In mammals the relaxin hormone is secreted by