Introduction to Animal Diversity and more animal diversity
- Slides: 16
Introduction to Animal Diversity !
and more animal diversity!
Make a hypothesis: How are these 9 animal phyla related? Draw an evolutionary tree with 9 branches… Arthropods (insects, spiders, crustaceans) Platyhelminthes (flatworms) Mollusks (snails to squids) Nematodes (roundworms) Porifera (sponges) Echinoderms (sea stars, sea urchins) Annelids (segmented worms) Chordates (mostly vertebrates) Cnidaria (jellies)
What do all animals have in common? • Multicellular with no cell walls • Heterotrophs that ingest food • Specialized cells capable of movement
Tissue Organization Tissue - a collection of specialized cells with a common structure and function - separated from other tissues by a membraneous layer - Ex: muscle tissue, nervous tissue - most (but not all!) animals have specialized tissue layers
Tissue Layers • Form during embryological development (gastrulation) • Blastula (ball of cells) develops germ layers – Ectoderm - Endoderm - Mesoderm • Embryos with two layers (ecto and endo only) are diploblastic • Embryos with all three layers are triploblastic
Diploblast Triploblast
Symmetry in Animals Bilateral Radial
Many bilaterally symmetrical animals show cephalization - a concentration of senses and brain in the head region
Animal Body Plans Gastrovascular cavity performs dual functions True digestive system
Protostomes vs. Deuterostomes (which comes first, mouth or anus? )
Segmentation Segment - a distinct section of the body; may be repeating (annelids) or differentiated (arthropods)
Skeletons • Endo • Exo • Hydrostatic
- Lirik lagu more more more we praise you
- More more more i want more more more more we praise you
- Introduction to animal diversity
- Human history becomes more and more a race
- What is ecosystem biodiversity
- Genetic diversity vs species diversity
- Asymmetrical
- 5 apples in a basket riddle
- The more you study the more you learn
- Aspire not to
- Examples of newton's first law
- Knowing more remembering more
- More love to thee o lord
- More choices more chances
- Introduction to insect biology and diversity
- Animal diversity chapter
- General features of animals