  The fragmentation of projectile and spectator matter is studied at different
incident energies using an isospin-dependent QMD model with reduced isospin
dependent cross-section. The sensitivity of the production of fragments is
analyzed using different parametrizations of density dependence of symmetry
energy. We shall also highlight the collective response of the momentum
dependent interactions(MDI) and symmetry energy towards the fragmentation of
colliding nuclei at intermediate energies.
