Living world

Increase in mass and increase in number of individuals are essential for growth of the living organism.

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For animals, International Code of Zoological Nomenclature. First word starts with capital letter while species name written in small letter.

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Zoological Parks Places where wild animals are kept in protected environment under human care Example: National Zoological Park, Delhi. Animals are placed in animal kingdom whereas plants are placed in plant kingdom. Example: Mangifera indica Mango -Name of author in last as abbreviation. Class Related orders are included in class. Increase in mass and increase in number of individuals are essential for growth of the living organism. Source of plant DNA is used in plant taxonomy and study of molecular taxonomy. Preservation of specimens of wood is known as Xylarium. First word starts with capital letter while species name written in small letter. Need for classification: To organise the vast number of microorganisms, plants and animals into categories that could be named, remembered, studied and understood.

Animals are placed in animal kingdom whereas plants are placed in plant kingdom. It is used for identifying unknown organisms. Genus It represents a group of related species which share one or more characteristics in common.

Specimen kept in herbarium can be whole plant, plant parts. Systematics : branch of biology dealing with taxonomy along with evolutionary relationship between organisms. Diversity in the Living World There are about 1.

Rule for Nomenclature: Latinised names are used.

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Certain organisms do not reproduce viz. But there are certain organisms which do not reproduce such as mules, sterile worker bees etc. Zoological Parks Places where wild animals are kept in protected environment under human care Example: National Zoological Park, Delhi. Taxa is defined as the group of organisms or population presented as same unit based on some characteristics. For example, Herbarium It is a collection of preserved plant material along with the scientific data associated with it. Taxonomy : Process of classification of organisms. Kingdom Different phylum forms the kingdom. In order to study all organisms in a simple way, scientist has proposed a system of classification. Museum They are meant for educational purpose mainly.

Species are classified based on some fundamental similarities. Order It is the assemblage of families with only few similarities.

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CBSE Class 11 Biology Chapter 1