BIO 1130 Lecture Notes - Lecture 14: Choanocyte, Filter Feeder, Sponge

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Tissue: cell to cell communication (2 tissue and 3 tissue layer mesoderm is the third layer where. Porifera are sponges earliest experiment in biology is a sponge! Unique and interesting because they are going to take the choanocyte to pump water through their bodies aquiferous system. Body cavity in the mesoderm which is important for organ system to enlarge. Porifera define the group through 4 factors. In the progression of tissue, these animals have no cell to cell communication (no interaction between the cells like gap junctions) but they are arranges in layer. Totipotent cells: very early cells in cell division can become any cell (e. g: stem cell where it has the potential to turn into any different type of cell) be able to gain nutrition. Porocyte is able to open and close the diameter to regulate the flow of the water into the cell . Vase-shaped cells where there are no tissues but only layer of cells.