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Class 11th English Medium Biology Notes
CBSE English Medium Class 11, Class 11th English Medium Biology Notes
Class 11th Biology Structural Organisation in Animals Notes
Structural Organisation in Plants and Animals A well-structured and engaging study material for students Introduction The chapter “Structural Organisation in Animals and Plants” helps us understand how living organisms are built, from the cellular level to tissues, organs, and organ systems. It highlights the differences and similarities in the structural complexity of plants and animals.
CBSE English Medium Class 11, Class 11th English Medium Biology Notes
Class 11th Biology Biological Classification Notes
Introduction Biological classification helps in organizing organisms systematically. It is necessary for:✔️ Understanding evolutionary relationships.✔️ Easier identification and nomenclature. 🌿 Aristotle classified organisms into plants and animals.📜 Carl Linnaeus proposed the two-kingdom classification.🔬 R.H. Whittaker introduced the five-kingdom classification in 1969.🧬 Carl Woese proposed the three-domain system based on RNA sequencing. Five-Kingdom Classification (Whittaker, 1969)