LIVING THINGS AND THEIR HABITATS CLASSIFICATION · Usually green and stationary Can grow and...
Transcript of LIVING THINGS AND THEIR HABITATS CLASSIFICATION · Usually green and stationary Can grow and...
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LIVING THINGS AND THEIR HABITATS
CLASSIFICATION
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Why do we need to classify?
Think about shopping in a supermarket - how do we
know where to find what we are looking for?
Each type of food is in its own place and we can
easily tell how items have been classified by looking
at the signs above the aisles.
Can the you think of other situations where
classification is essential? How does it make our lives
easier?
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KEY WORDS
Classification- organising things into groups.
Species- a category within the classification
system. Living things of the same type belong to
the same species.
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Scientists
estimate that
Planet Earth is
home to 8.7
million
species.
Classification
makes sense of
this huge
diversity.
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There are millions of types of living things in the
world, so it would be very difficult if we tried to
describe and name each one individually.
To help us understand living things, scientists organise
them into groups, according to features they share -
this is called classification.
Scientists are always looking for characteristics or
“observable features” which allow them to group
different species together and see how they are
related to each other
Photo: Elizabethe
Aristotle 384BC – 322BC
“In all things of nature
there is something of the
marvellous”
The classification of plants
and animals can be traced
back to Ancient Greece.
Aristotle was a famous
philosopher and scientist
who lived 2,500 years ago
and he was the first
person to try and classify
living things into groups.
Aristotle’s Ladder of Life
Aristotle decided there was a hierarchy of
living things which he called the Ladder of
Nature/Life; it ranked living things on
their ability to move and sense.
There were 2 major groups - plants and
animals, that he called Kingdoms. We still
use this term today for the broad division
of living things. Animals were divided into
two large subgroups - those with red blood
and those without; this corresponds closely
with the vertebrate and invertebrate
grouping we use today.
Aristotle’s Ladder of Life
Human Beings
Can think and be creative
Animals
Can move around to search for food
and escape predators
Sensitive to their surroundings
Plants
Usually green and stationary
Can grow and reproduce
Non-living Things
e.g. rocks
Aristotle’s Ladder of Life
Human Beings
Can think and be creative
AnimalsCan move around to search for
food and escape predatorsSensitive to their surroundings
Plants
Usually green and stationaryCan grow and reproduce
Non-living Things
e.g. rocks
Create your own ladder of life!
Carolus Linnaeus 1707 - 1778
Photo: Stuart Rankin
Linnaeus was a Swedish
scientist who developed a
system of organising living
things Linnaeus made it his
life’s work to develop a
way to classify and name
all life on Earth. It forms
the basis of the
classification and naming
system we use today. https://www.bbc.co.uk/teach/class-clips-video/science-ks2-the-work-of-carl-linnaeus/zhnjf4j
The Seven Levels of Linnaeus’ System
Kingdom
Phylum
Class
Order
Family
Genus
Species
More specific
This phrase will help
you remember the
order:
Keep ponds clean or frogs get sick
https://www.youtube.com/watch?v=FoZUNdOUj9g
Photo: Chester Zoo
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:Carnivora
Family: Felidae
Genus: Panthera
SpeciesLeo
Panthera leo (lion)
Backbone
Hair/fur, live young etc
Meat eating
Retractable claws
Roars
Research Task
Research Carolus Linnaeus.
Find out about his childhood, his interests, achievements and the contribution he made to the classification of living things.
Linnaeus‛ favourite plant was named after him - can you find out what it is?
Present your research in a fact-file like the example on
the next slide.