Statement - I :α -amino acids have high melting point and show unusually high solubility in polar solvents 
Statement - II :The Zwitter ion behaves like a salt

Amino acids are crystalline solids with relatively high melting points and most are soluble in water and insoluble in non-polar solvents. The amino acid molecule appears to have a charge which changes with p^H. An intramolecular neutralization reaction leads to a salt-like ion called a zwitterion.