Biology Final Review Food Webs- Draw a food web. Understand the producers and consumers Cell Division- why do they divide? Mitosis- Purpose -growth and rebuilding defining factors- Same dna of parent cells - clones Meiosis- Purpose- to create gametes for the production of children Defining features- produce 4 offspring with half the chromosomes, each one unique so siblings are not identical and have a varied gene pool. Happens via crossing over. Understand : Crossover verse Cloning Diploid vs Haploid Know well. Look at review sheets from last test. Classification Tree- Understand the order of them and when they are used. Vertebrate Classes-Mammals, Birds, Reptiles, Amphibians and Fish Types 3 Types of Fish: Characteristics of Bony Fish Osteichthys, Cartilaginous Fish- Sharks and rays, Agnatha- Jawless fish lampreys and hagfish 3 Types of Mammals: Placentas- Have a placenta, fully formed at birth, nature of a Placenta Marsupials-underformed, pouched and affected more by environmental conditions Monotremes-one entrance, lays eggs, secretes milk, only two types of mammal Orders of Placentals -Rodentia, and Carnivora- with Families- Mustelids, Felidae, Canidae and their identifying Characteristics Invertebrates-Phyllum Arthropoda and their exoskeletons. Sub phyllum anbd classes- insecta, arachnids, myriapods and crustacea Adaption-Definition, Natural Selection verse Selective breeding Symbiosis: Mutualism, Commensalism and parasitism Homeostasis