Information about 11th Standard School Subject content with Free PDF (Physics, Chemistry and Biology) for Preparation of NEET Examination, IIT-Jee Examinations and other entrance examinations in India. Study materials contain NCERT, CBSE, ICSE.
NCERT 11TH STANDARD BIOLOGY – BIOLOGICAL CLASSIFICATION – INTRODUCTION Since the dawn of civilisation, there have been many attempts to classify living organisms. It was done instinctively not using criteria that were scientific but borne out of a need to use organisms for our own use – for food, shelter and clothing. Aristotle was the …
#SHORT NOTES NEET PREPARATION (Chapter 1) -TAXONOMICAL AIDS TAXONOMICAL AIDS Taxonomic studies of plants, animals = useful in agriculture, forestry, industry and bio-resources and their diversity Used for classification and identification of organisms Identification of organisms = require intensive laboratory and field studies Specimen of plant and animal = prime source of taxonomic studies Herbarium …
#SHORT NOTES NEET PREPARATION (Chapter 1) -TAXONOMIC CATEGORIES TAXONOMIC CATEGORIES Classification = not a single step process but involves hierarchy of steps (Each step represents a rank or category) Category – part of overall taxonomic arrangement = taxonomic category All categories together constitute = taxonomic hierarchy Each category referred to unit of classification (rank is …
#SHORT NOTES NEET PREPARATION (Chapter 1) – LIVING WORLD (“LIVING”) DEFINITION AND EXPLANATION Biology – science of life forms and living processes EXPLANATION Living world – contain diversity (different) of living organisms. Early man can differentiate between inanimate matter and living organisms. Inanimate matter: example – wind, sea, fire etc) and Living organisms: example – …
#SHORT NOTES NEET PREPARATION (Chapter 1) – DIVERSITY IN THE LIVING WORLD Variety of living organisms – plants, insects, birds, pet, animals, microorganisms Number of species – 1.7 to 1.8 million – called biodiversity or the number and types of organisms present on earth Nomenclature – method to standardize the naming of living organisms (particular …
NCERT BIOLOGY: LIVING WORLD OR LIVING ORGANISMS Biology is the science of life forms and living processes. The living world comprises an amazing diversity of living organisms. Early man could easily perceive the difference between inanimate matter and living organisms. Early man deified some of the inanimate matter (wind, sea, fire etc.) and some among …