The Living World Video Lecture | Additional Study Material for Class 11

the Lewin world characteristics of
living organisms living organisms
exhibit some distinct observable
characters which distinguish them from
nonliving matter they are nutritional
all living organisms need food which
forms an important source of energy
metabolism is a defining feature of all
living organisms irritability living
organisms respond to changes in both the
internal and external environments grow
living organisms exhibit growth from
within using the food obtained from
nutrition reproduction living organisms
have the ability to perpetuate life
thereby ensuring the survival of the
species movement animals locomote from
place to place while lower organisms and
plants share movements of body parts
binomial nomenclature binomial
nomenclature is the universally accepted
scientific naming system of organisms
proposed by carolus linnaeus in this
two-word naming system each organism has
two Latin names a genus name beginning
with an uppercase letter and a species
name beginning with a lowercase letter
as represented in the example
the taxonomic hierarchy the process of
classifying organisms led to the
establishment of the taxonomic hierarchy
in which species occupy the lowest
category and the kingdom occupies the
highest category in the taxonomic
hierarchy depicted here observe that the
species form the basic unit of
classification closely related species
group together to constitute a genus a
number of a related genera constitutive
family related families are grouped into
orders orders into class and classes
into phyla many related phyla are
grouped into Kingdom
organisms with the air taxonomic
categories the taxonomic hierarchy of
some plants and animals are tabulated
here
note the accom name biological name
genus family order class and the phylum
they belong to
her barium a her barium is a storehouse
of collected plant specimens that are
dried pressed and preserved on sheets
these herbarium sheets are then arranged
according to an accepted system of
classification the herbarium sheets also
carry information about date and place
of collection local and botanical names
family collectors name etc it serves as
a quick reference guide for people
involved in taxonomic studies observe
the stacks of herbarium sheets arranged
in a herbarium in the visual shown above
importance of zoological parks
zoological parks or zoos are places
where wild animals are kept in protected
environments on the human care and
allowed to breed zoological parks help
us to knew about wild animals their food
habits behavior etc zoos are primarily
set up for entertainment conservation
education and research purposes
presently there are a large number of
zoological parks spread all across the
globe