MATH 210 Chapter : Section 4 2 Sums And Sigma Notation
Document Summary
Chapter 32: learning objectives: radial symmetry- any imaginary slice through the central axis divides the animal into mirror images (ex. Indeterminate cleavage- deuterostome development, each cell produced by early cleavage divisions retains capacity to develop into a complete embryo: coelom formation- In protostome development, the coelom forms from splits in the mesoderm. In deuterostome development, the coelom forms from mesodermal outpocketings of the archenteron: fate of blastopore. In protostome development, the mouth develops from the blastopore. Chapter 33: invertebrates: most recent hypothesis about animal phylogeny, figure 32. 11, metazoa . Porifera - no true tissue layers: eumetazoa- diploblastic; 2 tissue layers , ctenophora, cnidaria, bilateria- triploblastic; 3 tissue layers (everything else, concept 33. 1: sponges are basal animals that lack true tissues, metazoans, porifera: phyla calcarea and silicea. Live in both fresh and marine waters: asymmetrical body. Insects and their relatives: more species rich than all other animals, figure 33. 38.
