01:119:115 Lecture Notes - Lecture 5: Protostome, Invertebrate, Ecdysis

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:115
• Professor: A Keating

Document Summary

Ingest and digest food in body (both are done internally) Unique cell structure: eukaryotic, multicellular, no cell wall (fungi do) (use collagen for structure instead, external proteins that are outside of the plasma membrane (connect cells, structural support, ex. Cleavage (mitotic divisions: series of mitotic divisions without cell growth between divisions. Blastula (ball of cells: hollow ball of cells that surrounds a cavity called a blastocoel. Gastrulation (gut: embryo folds inward, expands, fills blastocoel, produced a gastrula with different layers of embryonic. Gastrula: endoderm = inner layer of embryonic tissue, ectoderm = outer layer of embryonic tissue, archenteron = pouch formed during gastrulation (opens to outside of gastrula via blastopore) Other animals with at least one larval stage (do not resemble adult) Morphologically different from adult: eat different food and live in different habitat from adult stage, eventually undergoes metamorphosis (shape change) through developmental stages. Juvenile stage (still sexually immature: adult stage ex.