Systematic Classification of Life - ep3, Metazoa - YouTube.
Characteristics of Metazoa. The unicellular protozoans are highly versatile and successful organisms that show remarkable organization and division of labour within the confines of the single cell. This diversity is achieved by varying the structure of their organelles at the sub-cellular level.
Introduction to the Metazoa Animals, Animals, Animals! This collage of animals reveals just a tiny fraction of the fascinating world of zoology. Our exhibits on animals will help you make sense of the complex and beautiful story of their history. For each group of organisms (each taxon), we present information on the group's fossil record, life.
Grouping animals. There are many different types of animals. The common animals most people know are only about 3% of the animal kingdom. When biologists look at animals, they find things that certain animals have in common. They use this to group the animals in a biological classification.They think several million species exist but they have only identified about one million.
Evolutionary History of the Metazoa Mysteries of ancient animal life Goals: Consider the central questions about the origin of Metazoa. Review modern evidence about time of origin, patterns of evolution, important processes. Outline for “History of Life” I. Cambrian Explosion 4.5 bya II. What we knew 15 yrs ago III. More Recent Discoveries A.
Metazoa. Animals can be further subdivided into two branches. The Choanozoa are unicellular aquatic protists that sometimes form colonies. The rest of the animals -- including fish, birds.
Classification. The protozoa group comprises more than 65,000 species. All the protozoan species belong to the kingdom Protista. Many kinds of protozoa are symbionts. Some of the protozoan species are parasites and some are predators of bacteria and algae. Some examples of protozoans are dinoflagellates, amoebas, paramecia, and plasmodium.
Classification of animals in the animal kingdom There are about 31 phyla, 68 classes and 350 orders of living animals, recognized in the animal kingdom. The following classification is based on the work of Hyman, Barnes and Storer with slight modification. ADVERTISEMENTS: Kingdom animalia: It includes the entire fauna (animal population) of the world.