Different colours of frog's skin are controlled by
Hormones
Melanocytes
Nervous system
Both $(a)$ and $(b)$
Figure shows human urinary system with structures labelled $A$ to $D$. Select option which correctly identifies them and gives their characteristic and/ or functions.
Luteinising hormone $(LH) $ in female
Conn's syndrome is characterised by
Which one of the following statement about sex hormones is correct