This video lecture from Kingdom Animalia (F.Sc. First Year Biology) covers Phylum Echinodermata (spiny skinned animals). General body plan, organs and organ systems, reproduction, examples, and relationship with other deuterostomes have been discussed in detail. 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.