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Welcome to eGyanKosh’s Unit-5: Classification of Multicellular Animals-II, a comprehensive study resource designed specifically for IGNOU students in 2025. This unit delves deeper into the diverse forms and classifications of multicellular organisms, offering an insightful exploration of their biological significance and evolutionary relationships. With a focus on enhancing your understanding and facilitating effective learning, this study material is available for free download, ensuring that you have access to quality educational resources at your fingertips. Whether you’re preparing for assignments, exams, or enhancing your knowledge in biology, this unit is an essential tool in your academic journey.