IV The Domain Eukarya E Fungi F Animals

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview:

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: - Multicellular , heterotrophic eukaryotes that lack a cell wall - Choanoflagellate ancestry - Oldest animal fossils date to 650 mya Dickinsonia, dating to 560 mya

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: - Multicellular , heterotrophic eukaryotes that lack a cell wall - Choanoflagellate ancestry - Oldest animal fossils date to 650 mya - Major radiation of phyla 550 mya – Cambrian ‘Explosion’ evolution of predatory Cnidarians selected for evolution of hard parts that fossilize more readily.

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 32 Animal Phyla: 95% of species are ‘invertebrates’ (85% are Arthropods); most are marine

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 32 Animal Phyla

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 32 Animal Phyla

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 32 Animal Phyla

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 2. Development:

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 2. Development: 3. Body Plans:

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 2. Development: 3. Body Plans: 4. Phylogeny:

IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 2. Development: 3. Body Plans: 4. Phylogeny: 5. Major “Invertebrate” Phyla a. Porifera: Sponges Intracellular digestion Cellular ‘circulatory’ system Asymmetrical Cells loosely integrated

5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish

5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish Two true tissue layers (diploblastic) Predatory (cnidocytes /nematocysts) Intra- and extracellular Digestion Ameobocytes in mesoglea (‘circulatory system’) Medusa Radial Symmetry Corals and endosymbiosis of algae Polyp

5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish “Bilateria” – bilateral symmetry cephalization: getting a head

5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish Protostomes - Lophotrochozoans

5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish Protostomes - Lophotrochozoans