Animal Diversity. Campbell Biology 7 th ed., Ch. 32, 33 & 34. What is an Animal?. Eukaryote Multicellular Heterotroph Has intercellular junctions Has muscle and nerve cells for movement and impulse conduction. Symmetry Radial Have top and bottom but no sides Bilateral
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.
Campbell Biology 7th ed.,
Ch. 32, 33 & 34
Have top and bottom but no sides
Have dorsal (superior) and ventral (inferior), anterior (front) and posterior (rear/back) sides
Can be divided into 2 equal halves
May exhibit cephalization (head)
Arise from germ (embryonic) layers ectoderm, endoderm and mesoderm
Live in water
Asymmetric body form
Lack true tissues and organs
Trap food as it passes through sponge body
Radial body symmetry
Gastrovascularcavity for digestion and material dispersion
Polyp (tubular body) with tentacles and mouth extending upward, or
Medusa (flattened body) with tentacles and mouth down
Tentacles contain a stinging chemical
Includes jellies, corals, hydra, anemones
Segmented wormsresemble a series of fused rings
Sharks, Rays, and their relatives
Have a skeleton composed primarily of cartilage
Southern stingray (Dasyatis americana).
Blacktipreef shark (Carcharhinus melanopterus).
During metamorphosis, the gills and tail are resorbed, and walking legs develop.
Wagler’s pit viper (Tropidolaemus wagleri), a snake