BIOL 1002 Chapter : Biology Notes Chapter 23
Document Summary
>animal diversity i: invertebrates: the main distinguishing features of the kingdom animalia are: 1: eukaryotic, multicellular, heterotrophic, ingestive method of digestion, sexual reproduction- mainly, no cell wall, rapid response to stimuli (nerves and muscles, life cycle with embryonic development, aerobic. >sponges - phylum porifera (fig 23-4: sessile - non-moving, filter feeders, may reproduce sexually or asexually by budding, most species have an asymmetric body plan designed for water filtration, lack tissue structure but have specialized cells (fig 23-5) 23-7) two types of body plan: polyp (mouth up) or medusa (mouth down, tentacles with nematocyst armed cnidocytes (fig. 3: the remainder of the animal kingdom is divided into two major branches based on developmental difference which are especially apparent during embryonic development and defines the protostomes (mouth develops first) vs. >protostomes: ecdysozoans and lophotrochozoans, these groups are separated based on specialized anatomy and molecular data (mostly.
