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Time evolution of modes of density contrast, in particular the growing modes,dictate the structure formation in Universe. In this paper we explicitly showhow (spatial) Non-Commutativity (NC) can affect the behavior of the modes, thatis we compute NC corrected power law profiles of the density contrast modes. Wedevelop a generalized fluid model that lives in NC space. The dynamicalequations of fluid, namely the continuity and Euler equations receive NCcontributions. When mapped to comoving coordinates these generate the NCextended versions of continuity and Friedmann equations for cosmology.Introducing cosmological perturbations finally yield the NC corrected evolutionof density contrast modes. The construction of the NC fluid model from firstprinciples and development of the formal aspects of its Hamiltonian formulationhave been presented in the first part.

Noncommutative fluid and Growing Modes of Inhomogeneity in (Newtonian) Cosmology