DIVERSITY IN THE LIVING WORLD

 

 • The naming the organisms using a set system of terms is referred as
nomenclature.
• Before nomenclature, identification ...

• Similar nomenclature rules are formulated for other organisms also:
• International Code of Nomenclature of Bacteria (IC...

• The name of each organism has two components:
- the Generic name, & the specific epithet
• This is known as Binomial sys...

5. The name of the author (discoverer) is mentioned after the specific
epithet, i.e., at the end of the biological name an...

Common name Scientific name
Human
Lion
Dog
Onion
Wheat
Brinjal
Rose
Pigeon
Homo sapiens
Panthera leo
Canis familiaris
Alli...

NEED OF CLASSIFICATION
Because study of all organisms is not possible. So it’s better to classify the
organisms.
Classific...

• Taxa can be big or small.
• Plants is form a taxon, a bigger taxon. Flowering plants is also a taxon but smaller
than pl...

TAXONOMIC CATEGORIES
• Classification is not done in a single step and organisms are classified
among taxa at different le...

Example of geographical
taxonomical hierarchy
Biological taxonomical
hierarchy: seven obligatory
taxa
In plants, division ...

SPECIES
• Species are a group of similar organisms which can interbreed freely among
themselves to produce fertile offspri...

GENUS
• a group of related species which has more characters in common in
comparison to species of other genera.
• Aggrega...

FAMILY
• A group of related genera with considerable number of similarities but
lesser than the genus and species.
• In pl...

ORDER
• Order is an assemblage of families which exhibit a few similar characters.
• The similar characters, however, are ...

CLASS
• This category includes related orders.
• For example, order Primata comprising monkey, gorilla and gibbon is
place...

KINGDOM
• Highest category of taxonomy.
• Animals in kingdom Animalia.
• Plants in kingdom Plantae.
• Lower the taxa, more...

TAXONOMIC AIDS
Economical Significance of taxonomical studies :
• Study of plants, animals and other organisms can be help...

HERBARIUM (plural: herbaria)
• It’s is a store house of collected plant specimens that are dried, pressed and
preserved on...

Collection of herbaria
Herbarium press

Two types of herbaria:
• Major (National) and
• Minor (regional/ local/ college or university)
Important Herbaria of the W...

BOTANICAL GARDENS
• Specialized gardens, where living plants are grown for scientific studies
(taxonomic) or reference.
• ...

ZOOLOGICAL PARKS
• Specialized places where living animals are kept in protected environments
under human care. Example: N...

https://www.tes.com/lessons/q14cf_HkAxg6pA/classwork-5-4

OTHER TAXONOMICAL AIDS
• Flora, manuals, monographs and catalogues: RECORDED DESCRIPTIONS.
• Help in correct identificatio...

KNOWLEGDE CLOUD
• Founder of Biology/ Zoology/ Taxonomy: Aristotle
• Father of Botany: Theophrastus
• Father of Indian Bot...

KNOWLEGDE CLOUD
• Trinomial Nomenclature: proposed by Lamarck
Additional word: subspecies for animals and variety for plan...

The living world Class 11 NCERT

The living world Class 11 NCERT

The living world Class 11 NCERT

The living world Class 11 NCERT


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