living world Flashcards
divrsity in the living world
range of species
1.7 to 1.8 billion
1.7 to 1.8 billion
nomenclature
provides the distinct and proper name to an organism
identification
finding correct names and place of an organism with the help of identification key
includes comparing animals with similarities and dissmiilarities
ICBN and ICZN
international code for botanical nomenclature
international code for zoological nomenclature
generic name and specific epithet
bionomial nomenclature
genus and species
given by carlos linnaeus
eg: Magnifera indica, magnifera is genus and indica is species
rules of binomial nomenclature
- latin and written in italic
- scientific names are handwritten and seprately underlines or printed in italic
- genus starts with capital letter specific epithet starts with small letter
- linn indicates linnaeus
classification
grouped into categories based on some easily observable characters
taxonomy
taxa
classification of all living organisms into different taxa based on their characteristics
term for these categories
external and internal structure ,structure of cell, development process and ecological formation are essential
basics of taxonomy
characterisation,identification,classification and nomenclature
taxonomic category
taxon
rank or level in the hierarchiacal classification of organism it is part of overall taxonomic arrangement
all categories together constitue the taxonomic hierarchy
unit of classification represents a rank
systematics
derived from latin word systema- systematic arrangement of organisms
linnaeus used systema nature as the title of his ublication
syatematics takes into account evolutionary relationshi[p between organisms
SPECIES
grp of individuals with fundamental similarities
1. leo- lion( panthera leo)
2. tuberosum- potato (solanum tuberosum)
3. tigris- tiger ( panthera tigris)
panthera solanum- genus
tuberosum leo tigris - species
GENUS
closely related species of other genera
potato and brinjal are different species but belong to the genus solanum
lion leopard and tigris are species of genus panthera
FAMILY
related genra with less no of smilarities
characterised on the basis of vegative and reproduvtive features
solanaceae- solanum,petunia,datura
panthera- lion,tiger, leopard
felidae
ORDER
closely related family
polymoniales: convolvulaceae and solanaceae
carnivora:felidae and canid
idea- animal
aceae- plants
