Invertebrates u5

By Ana Abadía and Toño Almudí

There are a lot of invertebrate animals,but we are not going to study all of them.

Invertebrate animals haven’t got a backbone.

Invertebrate animals do not have a spinal column.

Invertebrates don’t have an internal skeleton.

What are invertebrates?

All invertebrate animals are oviparous.


Do you remember…

What vertebrate animals are born from eggs?

Birds Reptiles FishAmphibians

They live in many different places and can be

herbivores, carnivores or omnivores.


Do you remember…

What do animals eat?

Herbivores eat plants.

Cows, rabbits and elephants.

Carnivores eat meat from other animals.

Lions, eagles, and sharks.

Omnivores eat plants and meat.

Bears and pigs.

Invertebrate animals haven’t got a backbone.

All invertebrate animals are oviparous.

They live in many different places and can be

herbivores, carnivores or omnivores.


GROUPS OF INVERTEBRATES

JELLYFISH ANNELIDS(WORMS)

MOLLUSCS ARTHROPODS

INSE

CTS

AR

AC

HN

IDS

(SP

IDER

S)

CR

UST

AC

EAN

S (C

RA

BS)

MYR

IAP

OD

S

STARFISHSPONGES



MOLLUSCS ARTHROPODS

INSE

CTS

AR

AC

HN

IDS

(SP

IDER

S)

CR

UST

AC

EAN

S (C

RA

BS)

MYR

IAP

OD

S


JELLYFISH

They don’t have a backbone.They are oviparous.Jellyfish are invertebratesThey live in the sea.They have tentacles that sting.They float with the sea and use propulsion.

JELLYFISH

Bell

Mouth

Tentacles

JELLYFISH



MOLLUSCS ARTHROPODS

INSE

CTS

AR

AC

HN

IDS

(SP

IDER

S)

CR

UST

AC

EAN

S (C

RA

BS)

MYR

IAP

OD

S


ANNELIDS(WORMS)

They don’t have a backbone.They are oviparous.Have a body divided into segments.They don’t have legs.They are long and soft.Mos of them live on land others live in the sea.Tapeworms live inside the human body.

ANNELIDS(WORMS)

MouthBumpREPRODUCTIVE SYSTEM

Anus

ANNELIDS(WORMS)

EARTHWORMS

ANNELIDS(WORMS)

TAPEWORM



MOLLUSCS ARTHROPODS

INSE

CTS

AR

AC

HN

IDS

(SP

IDER

S)

CR

UST

AC

EAN

S (C

RA

BS)

MYR

IAP

OD

S


MOLLUSCS

They don’t have a backbone.They are oviparous.Molluscs have soft bodies.Most of them have hard shells.

MOLLUSCS

MOLLUSCSwith SHELL

snail

clam

scallop

mussels

MOLLUSCSwithout shelloctopus

slug



MOLLUSCS ARTHROPODS

INSE

CTS

AR

AC

HN

IDS

(SP

IDER

S)

CR

UST

AC

EAN

S (C

RA

BS)

MYR

IAP

OD

S


ARTHROPODS

INSECTS

ARACHNIDS (SPIDERS)

CRUSTACEANS (CRABS)

MYRIAPODS

6 legs

More than 6 legs2 antennae

4 antennae

Withantennae

No antennae


ARTHROPODS

INSE

CTS

AR

AC

HN

IDS

(SP

IDER

S)

CR

UST

AC

EAN

S (C

RA

BS)

MYR

IAP

OD

S

They don’t have a backbone.They are oviparous.They don’t have antennae.They have a hard skin.They spin webs to trap insects.They eat the insects that they catch in their webs.


ARTHROPODS

AR

AC

HN

IDS

(SP

IDER

S)


ARTHROPODS

INSE

CTS

AR

AC

HN

IDS

(SP

IDER

S)

CR

UST

AC

EAN

S (C

RA

BS)

MYR

IAP

OD

S

They don’t have a backbone.They are oviparous.They have 4 antennae.They have an exoskeletonThey have joints and can bend theirlegs.


ARTHROPODS

CR

UST

AC

EAN

S (C

RA

BS)


ARTHROPODS

INSE

CTS

AR

AC

HN

IDS

(SP

IDER

S)

CR

UST

AC

EAN

S (C

RA

BS)

MYR

IAP

OD

S

They don’t have a backbone.They are oviparous.They have 2 antennae.They have 6 legs.Their body have 3 parts: head, thoraxand abdomen.


ARTHROPODS

INSE

CTS


ARTHROPODS

INSE

CTS

AR

AC

HN

IDS

(SP

IDER

S)

CR

UST

AC

EAN

S (C

RA

BS)

They don’t have a backbone.They are oviparous.They have 2 antennae.They have more than 6 legs.


ARTHROPODS

INSECTS

ARACHNIDS (SPIDERS)

CRUSTACEANS (CRABS)

MYRIAPODS

6 legs

More than 6 legs2 antennae

4 antennaeWith

antennae

No antennae

Copy and complete the sentences….

- Invertebrates do not have a ………..- An ................ is an annelid.- ……………….. have a shell.- Arthropods have an …………………….- Insects have six ………………- All arthropods are …………………..



MOLLUSCS ARTHROPODS

INSE

CTS

AR

AC

HN

IDS

(SP

IDER

S)

CR

UST

AC

EAN

S (C

RA

BS)

MYR

IAP

OD

S

Invertebrates u5

Science

Transcript of Invertebrates u5