Introduction to Science - skirbst.orgskirbst.org/15-Invertebrates.pdf · - “pore-bearers” (have...

Post on 06-Mar-2018

225 views 4 download

Transcript of Introduction to Science - skirbst.orgskirbst.org/15-Invertebrates.pdf · - “pore-bearers” (have...

Invertebrates

Mr. Skirbst

Kingdom Animalia

Animals

- multicellular heterotrophs whose cells lack cell walls

2 Major Divisions

2 Major Divisions

1- Invertebrates (no backbone)

2 Major Divisions

1- Invertebrates (no backbone)

2- Vertebrates (backbone)

Phylum Porifera

Phylum Porifera

- “pore-bearers” (have many holes)

- simplest invertebrates

Phylum Porifera

- “pore-bearers” (have many holes)

- simplest invertebrates

Sponges

- Have many pores

Sponges

- Have many pores

- Show little movement

Sponges

- Have many pores

- Show little movement

- Reproduce sexually & asexually

Sponges

- Have many pores

- Show little movement

- Reproduce sexually & asexually

- Cells can “reorganize”

Sponges

- Typical Sponge:

Phylum Cnidaria

Phylum Cnidaria

From the Greek word:“to sting”

Phylum Cnidaria

From the Greek word:“to sting”

- Have nematocysts (stinging structure)

Phylum Cnidaria

From the Greek word:“to sting”

- Have nematocysts (stinging structure)

- Have central cavity with one opening called a

“mouth”

Phylum Cnidaria

From the Greek word:“to sting”

- Have nematocysts (stinging structure)

- Have central cavity with one opening called a “mouth”

- Have specialized tissue

2 Body Forms

2 Body Forms

1. Polyp – vase shaped

(ex. hydra, coral, anemone)

2 Body Forms

2. Medusa – bowl-shaped

(ex. jellyfish)

3 Phylum of Worms

3 Phylum of Worms

1.Platyhelminthes

3 Phylum of Worms

1.Platyhelminthes - flat worms

3 Phylum of Worms

1.Platyhelminthes - flat worms

2.Nematoda

3 Phylum of Worms

1.Platyhelminthes - flat worms

2.Nematoda - roundworms

3 Phylum of Worms

1.Platyhelminthes - flat worms

2.Nematoda - roundworms

3. Annelida

3 Phylum of Worms

1.Platyhelminthes - flat worms

2.Nematoda - roundworms

3. Annelida - segmented worms

Phylum Mollusca

1.Bivalve

Phylum Mollusca

1.Bivalve – two shells

Phylum Mollusca

1.Bivalve – two shells

2. Gastropod

Phylum Mollusca

1.Bivalve – two shells

2. Gastropod – stomach foot

Phylum Mollusca

1.Bivalve – two shells

2. Gastropod – stomach foot

3. Cephalopod

Phylum Mollusca

1.Bivalve – two shells

2. Gastropod – stomach foot

3. Cephalopod – head foot

Phylum Echinodermata

Spiny skinned

Phylum Echinodermata

Characteristic - spiny skinned

Types of Echinoderms

1. Starfish (Sea Star)

Types of Echinoderms

1. Starfish

2. Sea Urchin

Types of Echinoderms

1. Starfish

2. Sea Urchin

3. Sea Cucumber

Phylum Arthropoda

Characteristics

1. Exoskeleton

Characteristics

1. Exoskeleton

2. Segmented body

Characteristics

1. Exoskeleton

2. Segmented body

3. Jointed appendages

4 Classes of Arthropods

1. Crustacean

2. Myriapods

3. Arachnids

4. Insects

4 Classes of Arthropods

1. Crustacean

2. Myriapods

3. Arachnids

4. Insects

4 Classes of Arthropods

1. Crustacean

2. Myriapods

3. Arachnids

4. Insects

4 Classes of Arthropods

1. Crustacean

2. Myriapods

3. Arachnids

4. Insects