THE ANIMAL KINGDOM

Ms. Fisher

Characteristics of ALLAnimals…

• Multi-cellular•Eukaryotic (nucleus)•Consumers- can’t make their own food, receive energy by eating other organisms•Mobility**Most animals have symmetry

All animals belong to one of two groups: Invertebrates or vertebrates(chordates) complex

This chapter we are discussing invertebrates, simple animals!

PART 1: Simple AnimalsInvertebrates

1. SPONGES: no symmetry• Most simple of all animals• Feed, breathe, and eliminate waste through pores • Traps what it needs as water flows thru• Sexual and asexual reproduction

2. STINGING-CELL ANIMALS

• Animals have stinging tentacles• Sexual reproduction• Have “mouth” structure• Radial symmetry

Anemone

HydraJellyfish

Symmetry

• Radial Originates from a center point

• Bilateral Divided into 2 equal sides (all

vertebrates

& some invertebrates

have bilateral)

3. Flatworm• Flat in shape• Bilateral symmetry• Cephalization

– “head” structure• Example:

a. Tapeworm – Parasitic- live on anotherliving thing– Intestines– Can be very longb. Planarian– non-parasitic– found in freshwater– mouth/anus same structure

4. Roundworm

• Round in shape “hookworm”• Separate mouth and anus• Bilateral symmetry• Example:

– Ascaris• Parasitic roundworm• Causes death

in 3rd world countries

5. Segmented Worms(most complex of all worms)

• Body divided into “segments”• Live anywhere (land, fresh + salt water)• Examples:

Earthworm Leech parasite

Earth Worm

Holds food

Grinds food Digest

Agenda: 10-24 Friday

Objective: Identify the 9 Major phyla of animals and give an example of each

1. Sponges 6. Soft Bodied/Mollusca 2.Stinging 7. Jointed-leg/Arthropoda

3. Flatworms 8. Spiny Skin/Echinoderms

4.Round Worms 9. Chordate

5. Segmented Worms 9 Major Phyla.docx

6. Soft-Bodied Animals (a.k.a. Mollusks)

• Soft body- have a soft body protected by a hard shell- also invertebrates

• Usually protected with a hard shell• Muscular foot for movement• Examples: clam, oyster, scallop, slug,

snail octopus

Soft bodied Animals:

Grouped into 3 classes based off of the following traits:

• Kind of foot• If a shell is present• And # of shells

1st Class: Snails & Slugs

• Wide muscular foot• Single shell-snails, slugs no shell * differ

eyes

2nd Class: Clams

• Two shells• Foot shaped like a shovel & is used to

bury themselves in sand

3rd Class: Octopus & Squid

• No shell• Muscular foot divided into arms• Move by shooting a jet of water

Review:

Features of soft bodied animals/Mollusca:

• All are invertebrates• Most have one or two shells• Most have a foot they use to move about

INVERTEBRATES1. Phylum: Sponges

2. Phylum: Stinging cell

3. Phylum: Flatworm

4. Phylum: Roundworm Simple Animals

5. Phylum: Segmented worms

6. Phylum: Mollusk (soft-bodied)

7. Phylum: Arthropods• Class

– Insecta– Arachnid– Crustacean Complex, Invertebrates

8. Phylum: Echinoderms– Starfish

Arthropods(Jointed-legs)

• Invertebrate• Largest phyla (3/4 of all animals on earth!!)• Exoskeleton

– Segmented body• Head• Thorax• Abdomen

• Bilateral symmetry• Appendages

– Legs, wings, antennae• Grow by molting

Complex Invertebrates:

7. Arthropod Class: Arachnid• 8 legs ( 4 pairs)• No antennae• 2 body segments• Spiders, scorpions, ticks

ArthropodClass: Insecta

• 6 legs (3 pairs)• 3 body segments• 2 pairs of wings (most)

ArthropodClass: Crustacea

• Mostly Marine animals• 2 pairs of Antennae• 4 pairs of walking legs• Some...1 pair of “pinchers”• Crab, lobster, shrimp,

crayfish

8.Spiny skin/ Echinoderm

• Radial symmetry• “Spines” on skin• 5-part body• Tube feet used for

movement, feeding, attachment.• Example: starfish

ALL ARE INVERTEBRATES1. Phylum: Sponges

2. Phylum: Stinging cell

3. Phylum: Flatworm

4. Phylum: Roundworm

5. Phylum: Segmented worms

6. Phylum: Mollusk (soft-bodied)

7. Phylum: Arthropods• Class

– Insecta– Arachnid– Crustacean

8. Phylum: Echinoderms– Starfish

NOW, TO DISCUSS VERTEBRATES…

9. Vertebrates

(Chordates)

Complex Animals