The fact that the wave function or state of the system obeys Schrodinger equation implies that: a) The wavefunction at time t is determined by the wavefunction at an earlier time t_o. b) Solutions obey the superposition principle. c) Probability is conserved. d) The time evolution of an observable is determined by expectation values of the commutator of the observable with the hamiltonian. e) The solution of the Schrodinger equation can be written as a sum of eigenstates of the hamiltonian. f) The time evolution operator is exp(-iH(t-t_o)). g) Expectation values of operators may be written either with time dependent states and time independent operators (Schrodinger picture) or with time independent states and time dependent operators (Heisenberg picture).