Phylum Porifera Sponges The First Animals Sponges are

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Phylum Porifera Sponges The First Animals

Phylum Porifera Sponges The First Animals

Sponges are animals and belong to the Animal Kingdom. Characteristics: 1. Multicellular 2. No

Sponges are animals and belong to the Animal Kingdom. Characteristics: 1. Multicellular 2. No organs or body systems 3. Cellular digestion – no mouth, no stomach, no anus (heterotrophic) 4. Asymmetry

Sponges are SESSILE – they do not move They obtain food by FILTER FEEDING

Sponges are SESSILE – they do not move They obtain food by FILTER FEEDING

They reproduce sexually (with sperm and eggs) in the water (external fertilization) They can

They reproduce sexually (with sperm and eggs) in the water (external fertilization) They can also reproduce asexually (regeneration)

Collar Cells – flagellated cells in the sponge that move water, food, and nutrients

Collar Cells – flagellated cells in the sponge that move water, food, and nutrients and take away waste.

 • Sponges have no nervous system – they cannot respond to environment and

• Sponges have no nervous system – they cannot respond to environment and cannot feel. • Shape of Life Video - Origins (Sponges) http: //shapeoflife. org/video/phyla/s ponges-origins or http: //vimeo. com/37032195

Phylum Cnidaria Jellyfish Song http: //www. youtube. com/watch? v=iub. J-XSL 9 go

Phylum Cnidaria Jellyfish Song http: //www. youtube. com/watch? v=iub. J-XSL 9 go

Cnidarians - jellyfish, coral, hydra, sea anemone *Named for the stinging cells or cnidoblasts

Cnidarians - jellyfish, coral, hydra, sea anemone *Named for the stinging cells or cnidoblasts that cover their tentacles, which contain stinging threads called nematocysts.

Characteristics of Cnidarians: • Radial Symmetry • Mouth • Nerve Net • Gastrovascular cavity

Characteristics of Cnidarians: • Radial Symmetry • Mouth • Nerve Net • Gastrovascular cavity • Tentacles with Cnidoblasts (stinging cells)

Most Cnidarians have radial symmetry

Most Cnidarians have radial symmetry

Nematocysts (barbs)

Nematocysts (barbs)

Gastrovascular cavity (digestion)

Gastrovascular cavity (digestion)

Cnidarians have two body forms: polyp (vase shaped) medusa (cup shaped)

Cnidarians have two body forms: polyp (vase shaped) medusa (cup shaped)

Portuguese Man of War is not a Jellyfish it is a cnidarian that floats

Portuguese Man of War is not a Jellyfish it is a cnidarian that floats in the water and has long tentacles Portuguese Man of War Video http: //boston. cbslocal. com/2013/07/04/po rtuguese-man-of-wars-sting-12 -athorseneck-beach-in-westport/

The Hydra is a freshwater cnidarian. What kind of symmetry does hydra have? Is

The Hydra is a freshwater cnidarian. What kind of symmetry does hydra have? Is it a medusa or a polyp?

Video of hydra at http: //www. microscopyu. com/moviegallery/pondscum/hydra/

Video of hydra at http: //www. microscopyu. com/moviegallery/pondscum/hydra/

Coral Reefs are made from the skeletons of cnidarians

Coral Reefs are made from the skeletons of cnidarians

Shape of Life Video Life on the Move (Cnideria) http: //shapeoflife. org/video/phyla/cnidaria ns-life-move or

Shape of Life Video Life on the Move (Cnideria) http: //shapeoflife. org/video/phyla/cnidaria ns-life-move or http: //vimeo. com/37267733