Discipline of Zoology organized a guest lecture on basis of Invertebrates classification on 7th December, 2021. This activity was planned for UG (Passcourse and Honors) and PG students. The talk was delivered by Prof. Reena Mathur, Department of Zoology, University of Rajasthan, Jaipur. She explained the invertebrates life in very interesting manner with examples. The various concepts of invertebrate classification and many new terminologies related to it were presented to the students in such a form that they could remember.