CHEM-C - Chemistry and Chemical Biology CHEM-C 106 Lecture Notes - Lecture 7: Germ Layer, Symmetry In Biology, Gastrulation
16 Jan 2017
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6: distinguish between two clades of bilateria protostomia and deuterostomia (knowledge/comprehension) 7: describe and identify two clades [ecdysozoans and lophotrochozoans] within protostomia (knowledge/comprehension) 8: name the major animals in each group (knowledge/comprehension: identify the major clades of animals. (book cladogram) (knowledge/comprehension) Some key words the first opening to the outside during embryonic development a hollow ball of developing cells that is one of the developmental stages of an embryo head. Coelom cellular division occurs at right angles or parallel to the polar axis of the dividing cells cellular division occurs diagonally to the polar axis of the dividing cells. Spiral cleavage the space between the outer body wall and the digestive tract or digestive tube. Deuterostome an anus develops from the first opening during embryonic development, the blastopore. Germ layer having two germ layers; ectoderm and endoderm animals that molt a true animal primary layer of cells that give rise to specific organismal structures.
