Classification
of living things
Y9 Core Biology
Characteristics of living things
› Movement
› Respiration
› Sensitivity/Irritability
› Growth
› Reproduction
› Excretion
› Nutrition
characteristic Definition
Movement The ability to change position of part or all the body
Respiration The break down of food molecules inside living cells to
release energy
Sensitivity The ability to sense and respond to changes in the
internal or external environment.
Growth The permanent increase in (dry) mass, size and/or
number of cells.
Reproduction The ability to produce organisms of the same kind.
Excretion The removal of metabolic wastes, toxic molecules and
substances in excess of requirement from the body
Nutrition Taking in substances needed for growth, respiration and
repair.
Why do we need to classify
living things?
› There are over 1.4 million different species
of discovered organisms on earth. We
classify them to make studying them
easier.
› Organisms are divided into five large
groups called kingdoms.
kingdoms
animals plants fungi protoctists Bacteria
Animals
Plants
Bacteria
Fungi
Yeast
Mucor
Protoctists
Amoeba
Euglena
Paramecium
Chlorella
Plasmodium
› We still find that in each group there may be
organisms that are very different such as ants and
giraffes in the animal kingdom.
› That is why each kingdom is divides into smaller groups
called phyla (singular: phylum).
› Each phylum is divided into several classes, then a
class is divide into orders, then family, then genus and
finally the smallest group is called species.
› Kingdom>phylum>class>order>family>genus>species.
› Try to remember them using this sentence:
› King Philip cut oranges for good students.
Animal kingdom
› Animals are either vertebrates (have a
back bone) or invertebrate (without a
back bone).
› Vertebrates are divided into five classes.
vertebrates
Fish Amphibians
Reptiles Birds
Mammals
Fish Amphibians Reptiles Birds Mammals
Body covering
Limbs
Ears
Eggs
Other
features
Fish Amphibians Reptiles Birds Mammals
Body
covering
Moist scales Moist,
smooth
skin
Dry and
rough scales
Feathers on
body, scales
on legs
Hair/ fur or
whiskers
Limbs Fins instead
of limbs
Young: fins
Adult: 4
limbs
4 limbs 4 Limbs
(2 wings, 2
legs)
4 limbs
Ears
lateral line
that feels
vibrations
Eardrum on
the surface
of the skin
A hole
leading to
the
eardrum
A hole
leading to
the
eardrum
An external
ear
Eggs
Lay eggs in
the water
covered
with jelly
Lay eggs in
the water
covered
with jelly
Lay eggs on
land with
rubbery
shells
Lay eggs on
land with
hard shells
Give birth
to their
young
Insects Arachnids Crustaceans Myriapods
Body segments
Number of legs
Antenna
Other features
Common features They all have: 1. Segmented bodies 2. Jointed legs 3. A hard exoskeleton
Insects Arachnids Crustaceans Myriapods
Body segments 3 body
segments
2 body
segments
2 body
segments
Many body
segments
Number of legs 3 pairs of legs 4 pairs of legs More than 4
pairs of legs
Many pairs of
legs
Antenna 1 pair none 2 pairs 1 pair
Other features Some have
wings
Some have
poisonous
glands
Some have a
very hard
exoskeleton
None
Common features They all have: 1. Segmented bodies 2. Jointed legs 3. A hard exoskeleton
Compound
eyes help
some
arthropods to
see in low
light
intensities and
can easily
spot
movement.
Molting in insects

Y9 ch1 classification of living things 2020

  • 1.
  • 2.
    Characteristics of livingthings › Movement › Respiration › Sensitivity/Irritability › Growth › Reproduction › Excretion › Nutrition
  • 3.
    characteristic Definition Movement Theability to change position of part or all the body Respiration The break down of food molecules inside living cells to release energy Sensitivity The ability to sense and respond to changes in the internal or external environment. Growth The permanent increase in (dry) mass, size and/or number of cells. Reproduction The ability to produce organisms of the same kind. Excretion The removal of metabolic wastes, toxic molecules and substances in excess of requirement from the body Nutrition Taking in substances needed for growth, respiration and repair.
  • 4.
    Why do weneed to classify living things? › There are over 1.4 million different species of discovered organisms on earth. We classify them to make studying them easier. › Organisms are divided into five large groups called kingdoms.
  • 5.
    kingdoms animals plants fungiprotoctists Bacteria
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.
  • 11.
    › We stillfind that in each group there may be organisms that are very different such as ants and giraffes in the animal kingdom. › That is why each kingdom is divides into smaller groups called phyla (singular: phylum). › Each phylum is divided into several classes, then a class is divide into orders, then family, then genus and finally the smallest group is called species. › Kingdom>phylum>class>order>family>genus>species. › Try to remember them using this sentence: › King Philip cut oranges for good students.
  • 12.
    Animal kingdom › Animalsare either vertebrates (have a back bone) or invertebrate (without a back bone). › Vertebrates are divided into five classes.
  • 13.
  • 14.
    Fish Amphibians ReptilesBirds Mammals Body covering Limbs Ears Eggs Other features
  • 15.
    Fish Amphibians ReptilesBirds Mammals Body covering Moist scales Moist, smooth skin Dry and rough scales Feathers on body, scales on legs Hair/ fur or whiskers Limbs Fins instead of limbs Young: fins Adult: 4 limbs 4 limbs 4 Limbs (2 wings, 2 legs) 4 limbs Ears lateral line that feels vibrations Eardrum on the surface of the skin A hole leading to the eardrum A hole leading to the eardrum An external ear Eggs Lay eggs in the water covered with jelly Lay eggs in the water covered with jelly Lay eggs on land with rubbery shells Lay eggs on land with hard shells Give birth to their young
  • 18.
    Insects Arachnids CrustaceansMyriapods Body segments Number of legs Antenna Other features Common features They all have: 1. Segmented bodies 2. Jointed legs 3. A hard exoskeleton
  • 19.
    Insects Arachnids CrustaceansMyriapods Body segments 3 body segments 2 body segments 2 body segments Many body segments Number of legs 3 pairs of legs 4 pairs of legs More than 4 pairs of legs Many pairs of legs Antenna 1 pair none 2 pairs 1 pair Other features Some have wings Some have poisonous glands Some have a very hard exoskeleton None Common features They all have: 1. Segmented bodies 2. Jointed legs 3. A hard exoskeleton
  • 21.
    Compound eyes help some arthropods to seein low light intensities and can easily spot movement.
  • 22.