1.
By Malak, Anna,
Handi and
Jonathan

2.
INDEX:
Introduction
Classification

3.
Introduction
 Invertebrates are living beings.
 They are the most numerous group of animals
on Earth.
 Can be terrestrial or aquatic
 They are heterotrophs
 They are multicellular
 They have eukaryotic cells

4.
Invertebrates are classified into
seven groups:
 Celenterats
 Sponges
 Annelids
 Flatworms nematodes
 Echinoderms
 Molluscs
 Arthropod

5.
1.CELENTARATS
How are they?
 Are shaped like a bag
 They have tentacles
 all live in the water
 animals are very ancient
 they have eyes
 some have exterior skeleton
 no need respiratory system
reproduction
 can be sexual or asexual
 usually asexual
 in the case of jellyfish usually sexual

6.
2.THE SPONGES
As they are?
 are simple invertebrates
 all are marine
 plankton feed
Reproduction
 reproduce asexually
Curiosities
 can be used as sponges shower

7.
3.EQUINODERMS
How are they?
 They mouth the center of the crawler body slowly
Reproduction
 is sexual
 fertilization and development is in water
 Breathing through some small branches or through ambulcrals feet.
 Where do they live? on coral reefs
Curiosities
 There are over 7,000 and 13,000 extint spices.
 When they are broken limb after a fear them and regrow
Examples:
 Starfish
 Sea urchins
 Ofiures
 Sea lilies

8.
4.ANNELIDS
Power:
 of marine plankton feed.
 have internal digestion
Breathing:
 it is through the skin
Reproduction:
 is sexual or asexual
 are oviparous

9.
5.2.ARTHROPODS
How are they?
have the body covered by exoskeleton must move
exoskeleton several times
Breathing:
 The aquatic breathe Braques
 The lungs breathe land
Reproduction:
 is sexual
 There are males and females often with some clear
difference
 There are examples of hermaphrodites
 can be oviparous, ovoviviparous or viviparous

10.
5.INSECTS
How are they?
 have two antennae and six pairs of legs
 are living terrestrial and freshwater
 know more than a million of species

11.
5.1.Crustaceous
How are they?
 with two pairs of jaws are antennas
 They are aquatic
Breathing
 have gill breathing

12.
5.3.MIRIAPODS:
How are they?
 are terrestrial
 have two antennas and several feet (10 to 200)
Respiration
 have tracheal breathing

13.
5.4.ARACHNID
Food:
 are carnivores.
Reproduction:
 have separate sexes with an important difference.
Breathing:
 breathe through gorges.
Curiosity:
 they do not have antennae sole have one or more pairs
of simple eyes. In some cases these eyes are very
effective for his life.

14.
6.FLATWORMS NEMATODES
How are they?
 have a soft body, elongated, sometimes divided up into segments and in
the case of smooth plains
Where do they live?
 may be free-living, living in calm waters or in very humid
 parasites such as tapeworms can live in the body and vertebrates
Food
 which are free living: they can be carnivorous or herbivorous
 parasites: they eat the animal feed which are parasites
 How to breathe?
 breathe through skin
Reproduction
 many are hermaphrodites

15.
7.MOLLUSCS
How are they?
 have a soft body and is covered with a wet skin
 most have shell
 have no legs
 can live in water and on land
Reproduction
 is sexual
 some have separate sexes
 Some are hermaphrodites

16.
7.1.GASTROPODS
How are they?
are the most abundant group
can be ground or water
Food
are herbivorous
Examples:
slug
Screw

17.
7.2.BIVALVES
How are they?
 have the body plan
 head no different
 use the foot to be buried
 are water
 filter the water to catch food
 shell have divided into two parts
Examples:
 clam
 European oyster
 Japanese oyster

18.
7.3.CEPHALOPODS
How are they?
 have highly developed senses
 do not peel or have a very small interior
 Ink can have a bag to fend
 are divided on foot and tentacles attached to the
head
Food
 are carnivores
Example:
 Common pop / rock
 squid

19.
CONCLUSION
at first did not want to invertebrates, but
in the end we liked and we have learned
many things
BIBLIOGRAPHY
the videos that gave Blanca
Viquipedia
SlideShare