UNIT 1.
LIVING THINGS
PRIMARY 3 / Natural Science
Pedro Antonio López Hernández
CLASSIFYING LIVING THINGS
Kingdoms
Animals
Plants Bacteria
Algae
Fungi Protist - They get their
- They are food from
- They are protist microscopic other living
- They use air, organisms that can things.
- They get their food that live in water. - Protozoa are
water and light live in different
from other living microscopic
to make food. habitats. - Most animal
things. - They can make protist that feed
their own food. on other living can move
- They can´t - Some bacteria can around in
- They can´t move. things.
move. make their own order to find
- They don´t have
- Some of them are roots or leaves - They can live in food and other get food.
- They make their their food from
microscopic. different habitats.
own food. other being.
( They grow underground and they keep the
plant fixed in one place)
Roots
They absorb water and minerals from the
soil to make food
They support the plant (branches and leaves).
THE PLANT KINGDOM Stem It carries water and minerals from the roots to the
leaves
*(In one tree it
is called trunk)
Parts of the plant
It transports the nutrients to other parts of the
plant.
They make food from the plant. They turn water
and minerals into nutrients.
Leaf (S) Petiole
Leaves (P) Many leaves have a:
Blade
Plants absorb sunlight, carbon dioxide,
water and minerals
Photosynthesis
They release oxygen into the air
Nutrition
Respiration Plants absorb oxygen and they release
carbon dioxide into the air
THE VITAL FUNCTIONS OF PLANTS Interaction Some plants move toward sunlight
Plants can reproduce by seeds
Reproduction
Plants can reproduce by one piece of the
same plant
PLANT CLASSIFICATION
“We classify plants depending on how they look and feel and how they perform their vital functions”
Stems
Flowers
We also classify plants
It is the reproductive organ according to the look
of most plants and feel of their stems
Woody plants
Herbaceous plants
Non-flowering plants They have a hard
Flowering plants They have a thin,
stem. They have two
They don´t have groups: flexible stem.
They reproduce flowers, fruits or
through flowers, fruits seeds but reproduce They are: herbs or
- Trees
or seeds. by spores daisies.
- Bushes
Animals need energy In the process of
that comes from food. nutrition, animals
transform NUTRIENTS into
Food contains nutrients. ENERGY
Nutrition Herbivores They only
eat plants
There are three types
of animals according Carnivores They only eat
with their food other animals
They eat
Omnivores
plants and
other animals
THE ANIMALS KINGDOM The ability to respond to the environment.
Interaction
For example:
“Vital functions in order to live and grow”
When one animal is hot, he moves into the shade
Viviparous They are born alive from their
mothers. For example: Dogs.
Reproduction
“Living things can make
other living things” They are born from eggs.
Oviparous For example: Ducks
ANIMALS CLASSIFICATION
Vertebrates
Invertebrates
“Animals with a backbone”
- They have an internal skeleton with bones that support the
body and protect the internal organs such as the heart or - Animals that don´t have a backbone.
the lungs.
- They don´t have an internal skeleton or bones.
- Some vertebrates are viviparous and other are oviparous.
- All invertebrates are OVIPAROUS.
- All vertebrates have head, body and limbs.
- The spinal column or backbone has many individual bones
that are joined together.
Ecosystem
“ All the different living things that interact in a particular place “
Habitats Individuals and population
- They have a particular temperature, light, air,
water and type of soil found there. - Living things live together in group.
“ THESE CONDITIONS ARE KNOWN AS AN - They live with other animals of the same
ENVIRONMENT” species.
Food chains
Communities
- They show the feeding relationships between
the different organisms within an ecosystem.
- The group of all populations that share a habitat.
- Plants, animals and other living things can be
part of the same community.
