Kingdom Animalia Invertebrates (Simple Animals) Mr. Skirbst Life Science Topic 16

Kingdom Animalia

Animals – multicellular heterotrophs whose cells lack cell walls

Kingdom Animalia Animals – multicellular heterotrophs whose cells lack cell walls 2 Major Divisions:

Kingdom Animalia Animals – multicellular heterotrophs whose cells lack cell walls 2 Major Divisions: 1- Invertebrates (no backbone)

Kingdom Animalia Animals – multicellular heterotrophs whose cells lack cell walls 2 Major Divisions: 1- Invertebrates (no backbone) 2- Vertebrates (backbone)

Invertebrates

Phylum Porifera

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

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

Phylum Cnidaria 2 Body Forms:

Phylum Cnidaria 2 Body Forms: 1.Polyp – vase shaped (ex. hydra, coral, anemone)

Phylum Cnidaria 2 Body Forms: 1.Polyp – vase shaped (ex. hydra, coral, anemone) 2.Medusa – bowl-shaped (ex. jellyfish)

Other Invertebrates Worms Mollusks Arachnids Insects Echinoderms Etc…….