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Characteristics
Multicellular Eukaryotic with no cell walls Heterotrophs (consumers) Have a nervous system to respond to their environment Locomotion relates to ability to obtain food
Protection and Support Though not all animals have a
skeleton, those that do can be divided into two groups:–Those with an exoskeleton – a
hard, waxy coating on the outside of the body that protects internal organs, provides a framework for support, and a place for muscle attachment.
–Those with an endoskeleton – support framework within the body that protects some organs and a brace for muscles to pull against.
The phyla of the Kingdom Animalia
There are nine phyla in the Kingdom Animalia.
Each phyla contains animals which share many characteristics with each other.
8 of the phyla are considered invertebrates (this means that a they lack a backbone.
The 9th phylum are animals with a backbone.
In the Animal Kingdom there are 9 Phyla
• Porifera
• Cnidaria
• Platyhelminthes
• Nematoda
• Annelida
• Mollusca
• Echinoderm
• Arthropoda
• Chordate
Phylum Porifera Sponges
simplest form of animal life
live in water
Do not move around (sessile)
no symmetry
Pores (holes) all over body
Capable of sexual or asexual reproduction (budding)
I thought all animals moved?
Adult sponges don’t move, but as larvae they do.
The larvae can swim around.
Eventually they attach themselves to the ocean bottom and metamorphose into their adult form.
Phylum Cnidaria or Coelenterata
Live in water
Most have tentacles
catch food with stinging cells
Examples - Jellyfish, Hydra, sea anemones, and corals
Phylum Platyhelminthes
Flatworms Flat, ribbon-like body Live in water or are parasites bilateral symmetry Examples: Planaria eyespots detect light food and waste go in and
out the same opening
Phylum Nematoda Roundworms
–Round, tubular body–small or microscopic –bilateral symmetry–have both a mouth and anus–Live in water or are parasites
Examples:– Hookworm– Trichinella
Phylum Mollusca
Soft bodies Hard Shells Live on land or in water Important food source for humans Phylum Mollusca has three classes
Phylum Mollusca
Class Gastropoda
Or Univalves
–snails and slugs
–may have 1 shell
–stomach-footed - move on stomach
Phylum Mollusca
Class Bivalves
–2 shells hinged together
–clams, oysters,
scallops and mussels
Phylum Annelida
– Segemented worms– Body divided into
segments(sections)– Live in water or
underground
– have a nervous and circulatory system eat soil and breakdown organic matter,
wastes provide nutrients to soil
Phylum Echinodermata
Hard, spiny skin Live in salt water Radial symmetry name means ‘spiney skinned’ endoskeleton Examples: seastar, sea urchin, sand dollar and
sea cucumber
Phylum Arthropoda
Body divided into sections/segments Exoskeleton Jointed legs well developed nervous system largest group of organisms on earth Phylum Arthropoda has 5 classes
Phylum Arthropoda
Class – Arachnida no antennae 4 pairs of legs 2 body regions - cephalothorax &
abdomen spiders, scorpions, mites & ticks
~Invertebrate Phylum Arthropoda
Class Insecta no antennae 3 pairs of legs grasshoppers, ants, butterflies, bees
Phylum Chordata-Animals that have a backbone
5 classesFish
Mammals
Reptiles
Amphibians
Birds