This video lecture from Support and Movement (F.Sc. second year Biology) covers: Skeleton which provides support to animals body and its types. Details about hydrostatic skeleton and exoskeleton. Ecdysis or moulting and the steps involved in ecdysis in insects. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.