BIOLOGY 3 Lecture Notes - Lecture 19: East Los Angeles College, Expressed Sequence Tag, Animal
Document Summary
The opisthokonts are a monophylletic group that contains two of the three. Features that distinguish animals from all other eukaryotes. Any living thing that is not a plant. Animals are multicellular, eukaryotic organisms of the kingdom animalia (also called metazoa). All animals are motile, meaning they can move spontaneously and independently at some point in their lives. A living organism that feeds on organic matter, typically having specialized sense organs and nervous system and able to respond rapidly to stimuli. Although all animals are multicellular, multicellularity is not restricted to the metazoa. Brown algae, red algae, green algae (and plants) amoebozoa and fungi all have multicellular forms. All metazoa have a blastula stage of development. The collar of both choanoflagellates and choanocytes is comprised of fine cytoplasmic extensions filled with actin filaments that form a strainer on which small particulate matter can be trapped and then ingested by the cell.
