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NEET Quick Revision Notes by ShastriG

June 11, 2021

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NEET Quick Revision Notes by ShastriG

NEET Quick Revision Notes by ShastriG CBSE Class-11 Biology CHAPTER-01 THE LIVING WORLD Life is a unique, complex organization of molecules that expresses itself through chemical reactions which lead to growth, development, responsiveness, adaptation and reproduction. The objects exhibiting growth, development, reproduction, respiration, responsiveness and other characteristics of life are designated as living beings. Unique features of living organism:- 1. Growth- Living organisms grow in mass and number. A multicellular organism increases its mass by cell division. In plants growth continuous throughout life in their meristematic area but in animals, growth occurs to a certain age. Unicellular organisms also grow by cell division. Living organisms show internal growth due to addition of materials and formation of cells inside the body. Non living organism like mountains, boulders, crystals also grow but due to addition of similar materials to their outer...

Cbse 11th biology chapter 1 the living world

Chapter 1 The living world Points to Remember 1. Organism (Microorganism, plant and animals) who posseses life is living. 2. Life is a complex organisation expressing itself through chemical reactions and exhibit characteristics of living organisms. 3. Characteristics of Living Organisms : Growth, reproduction, metabolism, cellular organisation, consciousness (ability to sense environment), self- replicating and self regulation.  Reproduction and growth are NOT defining properties.  Metabolism, cellular organisation and consciousness are defining properties.  Living organisms are self-replicating, evolving, self-regulating and interactive systems capable of responding to external stimuli. 4. Biodiversity : Term used to refer to the variety of microorganisms, plant and animals on earth. 5. Need for classification : To organise the vast number of microorganisms, plants and animals into categories that could be named, remembered, studied ...

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NEET Quick Revision Notes by ShastriG

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