Invertebrates
This presentation is the property of its rightful owner.
Sponsored Links
1 / 64

Invertebrates PowerPoint PPT Presentation


  • 70 Views
  • Uploaded on
  • Presentation posted in: General

Invertebrates. Diversity of Animals Porifera Cnidaria Platyhelminthes Nematoda Mollusca Annelida Arthropoda Echinodermata. Diversity of Animals. A. Origin of Animals B. Characteristics C. Classification. A. Origin of Animals.

Download Presentation

Invertebrates

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Invertebrates

Invertebrates

Diversity of Animals

Porifera

Cnidaria

Platyhelminthes

Nematoda

Mollusca

Annelida

Arthropoda

Echinodermata


Invertebrates

Diversity of Animals

A. Origin of Animals

B. Characteristics

C. Classification


Invertebrates

A. Origin of Animals

1. Animals are believed to have evolved from colonial protozoans called choanoflagellates


Invertebrates

B. Characteristics

  • 1. Eukaryotic

  • 2. Multicellular

    • -specialization

  • 3. Heterotrophic

  • 4. Reproduce sexually and asexually

  • 5. Movement

    • -nervous tissue

    • -muscle tissue


Invertebrates

C. Classification

1. Sponges (Porifera)

2. Stinging Celled (Cnidaria)

3. Flatworms (Platyhelminthes)

4. Roundworms (Nematoda)

5. Soft Bodied (Mollusca)

6. Segmented Worms (Annelida)

7. Jointed Leg (Arthropoda)

8. Spiny Skin (Echinodermata)

9. Vertebrates (Chordata)


Invertebrates

Porifera

A. Diversity

B. Characteristics

C. Classification

D. Habitat


Invertebrates

A. Diversity

1. There are 9,000 known species of sponges


Invertebrates

B. Characteristics

1. Resemble a tube with one opening

2. Lack true tissue

3. Body consists of two layers of cells

4. Reproduce sexually (same individual) or by budding


Invertebrates

C. Classification

1. There are 3 classes of porifera


Invertebrates

D. Habitat

1. Adults are sessile- anchored to the ocean floor

2. Feed on filtered particles (bacteria)


Invertebrates

B. Characteristics

a. outer: protection

b. inner: collar cells

c. between: amoebocytes injelly-like material

1. Resemble a tube with one opening

2. Lack true tissue

3. Body consists of two layers of cells


Invertebrates

C. Classification

a. calcarea- calcium carbonate

b. demospongia- spongin fibers

c. hexactinellida- calcium carbonate & silica

1. There are 3 classes of porifera


Invertebrates

Cnidaria

A. Diversity

B. Characteristics

C. Classification

D. Habitat


Invertebrates

A. Diversity

1. There are 9,000 known species of stinging celled animals


Invertebrates

B. Characteristics

1. True tissues

2. Radial symmetry

3. Use tentacles with stinging cells to capture prey

4. Food is digested in a gastrovascular cavity

5. Nerve net allows for sensing


Invertebrates

C. Classification

1. There are 3 classes of cnidarians

a. hydrozoa- hydra

b. scyphozoans- jellyfish

c. anthozoans- sea anemones


Invertebrates

D. Habitat

1. Most are slow moving or sessile

2. Found in tropical and temperate waters

a. shallow ocean floors

b. bottoms of ponds

c. drifting in water currents


Invertebrates

B. Characteristics

1. True tissues

2. Radial symmetry

3. Use tentacles with stinging cells to capture prey


Invertebrates

Platyhelminthes

A. Diversity

B. Characteristics

C. Classification

D. Habitat


Invertebrates

A. Diversity

1. There are 20,000 known species of flatworms


Invertebrates

B. Characteristics

1. Three tissue layers

2. Bilateral symmetry

3. Food is digested in a gastrovascular cavity

4. Moves using cilia on ventral side

a. muscles allow twisting and turning

5. Centralized nervous system

a. eye spots detect light

b. side flaps used for smell


Invertebrates

B. Characteristics

1. Three tissue layers


Invertebrates

B. Characteristics

a. endoderm (digestive)

b. mesoderm (muscle)

c. ectoderm (skin)

1. Three tissue layers


Invertebrates

B. Characteristics

1. Three tissue layers


Invertebrates

B. Characteristics

a. anterior (head)

b. posterior (tail)

c. dorsal (back)

d. ventral (belly)

1. Three tissue layers


Invertebrates

C. Classification

1. There are 3 classes of platyhelminthes

a. turbellaria- planarians

b. trematoda- flukes

c. cestoidea- tapeworms


Invertebrates

Nematoda

A. Diversity

B. Characteristics

C. Classification

D. Habitat


Invertebrates

A. Diversity

1. There are 15,,000 known species of roundworms


Invertebrates

B. Characteristics


Invertebrates

C. Classification

1. There are 2 classes of nematoda

a. secernentea-

b. adenophorea-


Invertebrates

Mollusca

A. Diversity

B. Characteristics

C. Classification

D. Habitat


Invertebrates

A. Diversity

1. There are 150,000 known species of soft bodied animals


Invertebrates

B. Characteristics

  • Muscular foot

  • Mantle

  • Visceral mass which contains most of the internal organs

  • Some have shell of calcium carbonate

  • Sessile(clams), slow moving (snails)or predators (squid)

  • Complete digestive tract.

  • Coelom

  • Feathery gills or lungs

  • Nephridia

  • Nervous system-simple to complex


Invertebrates

C. Classification

  • Gastropoda- snails, slugs,nudibranch

  • Bivalvia-clams,oysters, scallops

  • Cephalopoda- cuttlefish, squid, nautilus, octopus


Invertebrates

Annelida

A. Diversity

B. Characteristics

C. Classification

D. Habitat


Invertebrates

A. Diversity

1. There are 15,000 known species of segmented worms


Invertebrates

B. Characteristics

  • Segmentation

  • Coloem divided in compartments-allows for independent movement of segments

  • Setae

  • parapodia


Invertebrates

  • Classes

  • Oligochaeta- earthworm

  • Polychaeta-bristle worm

  • Hirudinea-leech


Invertebrates

  • Earthworm

  • Digestion-esophagus to crop to gizzard

  • Circulation-closed system with aortic arches.

  • Respiratory-diffusion

  • Excretion-nephridia

  • Nervous- ganglia

  • Rerpoduction-hermaphrodite

    • Clitellum


Invertebrates

D. Habitat

  • Soil-oligochaeta

  • Freshwater-oligochaeta, hirudea

  • Marine-polychaeta

  • Moist vegetation-hirudea


Invertebrates

Arthropoda

A. Diversity

B. Characteristics

C. Classification

D. Habitat


Invertebrates

A. Diversity

1. There are 1,000,000 known species of jointed leg animals


Invertebrates

B. Characteristics

  • Segmented

  • Appendages

  • Exoskeleton

  • Compound eyes

  • Antenna

  • Ventral nerve cord

  • Open circulatory system

  • Molting


Invertebrates

C. Classification

1. Arthropods are classified into 4 classes

a. crustaceans

b. arachnids

c. insects

d. myriapods


Invertebrates

  • 2. Crustaceans include decapods (lobsters, crabs, & shrimp)

  • 2 pr appendages on head

  • 2pr appendages/segment

  • Gills

  • Larva-nauplius

  • Tiny (copepods) to very large (Japanese spider crab)

  • Barnacles-sessile

  • isopods


Invertebrates

  • 3. Arachnids

  • Spiders, mites, ticks

  • Cephalothorax

  • 6 pr jointed appendages

    • 1 pr chelicerae

    • 1 pr pedipalps

    • 4 pr walking legs


Invertebrates

  • 4. Insects

  • Segmented body, jointed appendages, exoskeleton

  • Subphylum Uniramia

  • Head, thorax, abdomen

  • Mandibles & antennae

  • 3prs jointed legs

  • Some 1 or 2 pr wings


Invertebrates

4. Insects


Invertebrates

4. Insects

  • -over 700,00 species identified

  • Flight

  • Light sturdy exoskeleton

  • Small: many in an area

  • -Short life span & lots of young

    • -Natural selection


Invertebrates

4. Insects

  • Development-Metamorphosis

  • Incomplete

  • Complete metamorphosis

  • Importance

    • Larvae & adult don’t compete (i.e. mosquitoes)

    • Survive harsh weather (i.e. butterflies, moths)


Invertebrates

5. Myriapods

-milipedes and centipedes


Invertebrates

D. Habitat

1. Everywhere except deep ocean


Invertebrates

4. Insects


Invertebrates

Echinodermata

A. Diversity

B. Characteristics

C. Classification

D. Habitat


Invertebrates

A. Diversity

1. There are 7,000 known species of spiny skinned animals


Invertebrates

B. Characteristics

  • “spiny skin”

  • Bilateral symmetry – larva

  • Pentaradial symmetry-adults

  • Deuterostomes

  • Endoskeleton of ossicles

  • Carnivores

  • Turn stomach inside out through mouth to feed

  • Nerve ring

  • Separate sexes

  • Regeneration


Invertebrates

  • Water-vascular system

  • Tube feet


Invertebrates

C. Classification

  • 5 Classes include:

    • Sea lilies and feather stars

    • Basket stars & brittle stars

    • Sea urchins & sand dollars

    • Sea cucumbers

    • Sea stars

Sea star

Brittle star

Sea urchin

Feather star

Sea cucumber


Invertebrates

A. Origin of Animals

1. Animals are believed to have evolved from colonial protozoans called choanoflagellates


Invertebrates

B. Characteristics

1. Eukaryotic

2. Multicellular

3. Heterotrophic

4. Reproduce sexually and asexually


Invertebrates

C. Classification

1. Sponges (Porifera)

2. Stinging Celled (Cnidaria)

3. Flatworms (Platyhelminthes)

4. Roundworms (Nematoda)

5. Soft Bodied (Mollusca)

6. Segmented Worms (Annelida)

7. Jointed Leg (Arthropoda)

8. Spiny Skin (Echinodermata)

9. Vertebrates (Chordata)


  • Login