Biology 1108 Exam 3 Questions and Answers Latest Update | 120 Questions | Graded A+

Biology 1108 Exam 3 Questions and Answers (Latest Update) 120 Questions | Graded A+. Alpine - Correct Answers Similar to Tundra, Lacks permafrost, Budding - Correct Answers Form of asexual reproduction in which a bud/protrusion forms on an organism and eventually breaks off to form a new organism that is smaller than its parent. Fragmentation - Correct Answers A type of asexual reproduction in which one organism is broken into pieces, each of which develops into a new individual Parthenogenesis - Correct Answers A type of asexual reproduction in which females produce eggs that are not fertilized by males but divide by mitosis and develop into new individuals. What two basic processes describe Sexual reproduction - Correct Answers Meiosis and fertilization Advantages of asexual reproduction - Correct Answers Exponential population growth, everyone can reproduce Biology 1108 Exam 3 Questions and Answers (Latest Update) 120 Questions | Graded A+ External Fertilization - Correct Answers Egg and sperm released directly into the water. Low chances, but countered by producing large numbers of gametes, or other strategies Internal Fertilization - Correct Answers Fertilization takes place inside the body of the female. Considered an adaption for land animals R-Strategists - Correct Answers organisms that produce large numbers of offspring without a lot of parental investment. Mainly found in unstable changing environments. K-Strategists - Correct Answers organisms that produce few offspring but put in a lot of parental investment. Mainly found in stable environments where there is lots of competition. Amnion - Correct Answers a membrane surrounding a fluid filled cavity that allows the embryo to develop in a watery environment. Huge impact on animals abilities to reproduce w/o water. Allantois - Correct Answers Encloses a space within the egg where metabolic waste collects Chorion - Correct Answers surrounds the entire embryo along with its yolk and allantoic sac. Limits water loss and allows has exchange within environment. Cleavage - Correct Answers First set of mitotic division after fertilization of zygote. Single large egg divides into many smaller cells. Morula - Correct Answers A solid ball of cells that results from cleavage Blastula - Correct Answers Further cell divisions after the morula result in the blastula, a fluid filled ball of cells. Marks the beginning of implantation into the uterine lining. Pregnancy - Correct Answers The carrying of one or more embryos in the uterus Biology 1108 Exam 3 Questions and Answers (Latest Update 2023) 120 Questions First Trimester - Correct Answers Embryo develops all of its major organs and becomes recognizably human. becomes a fetus toward the end of the first trimester Gastrulation - Correct Answers The second key developmental process in embryogenesis. The reorganization of the embryo. Form three layers of sheets of cells called germ layers. All tissues and organs are made from these three layers. Three Germ Layers - Correct Answers Outer Ectoderm, Intermediate mesoderm, and inner endoderm Organogenesis - Correct Answers the transformation of the three germ layers into all the organ systems of the body. Sex Determination - Correct Answers achieved by absence or presence of Y Chromosome Biology 1108 Exam 3 Questions and Answers (Latest Update 2023) 120 Questions 2nd Trimesters - Correct Answers Characterized by continued development and growth of the fetus. Fetal movements are usually first felt in this stage. 3rd Trimester - Correct Answers Rapid growth, fetus doubles in size during the last two months. Hox genes - Correct Answers regulate development of major features of body form in animals. Similar to DNA sequences and relative positions on chromosomes Parazoans - Correct Answers The most basal metazoans, consisting of the Subkingdoms Porifera and Placozoa. Have no gut Metazoans - Correct Answers Two subkingdoms, parazoans and eumetazoa Eumetazoa - Correct Answers Subkingdom of Metazoa, characterized by having a gut. Must either be diploblastic or triploblastic Biology 1108 Exam 3 Questions and Answers (Latest Update 2023) 120 Questions Porifera - Correct Answers Sponges; lack organized tissues and guts. Filter feeders, mainly marine, specialized cell types. Bottom dwelling. Most basal metazoan. Are chemically exotic, using chemicals for competitive interactions, and natural pharmaceuticals. Radial Symmetry - Correct Answers Characteristic of Eumetazoans, have multiple planes of symmetry. Usually attached to a surface, or they float. Use nerve net to receive information across whole body, no CNS. Bilateral Symmetry - Correct Answers Characteristic of Eumetazoa, only one plane of symmetry Cnidaria - Correct Answers Corals and Jellyfish. Diploblastic, radial symmetry, tentacles around mouth to catch prey, have cnidocytes (stinging cells), single mouth/anus. Tentacles hand down to allow for easy prey capture and digestion. Ecdysozoa - Correct Answers Characterized by the molting of the cuticle, two main phylum are Arthropoda and Nematoda Biology 1108 Exam 3 Questions and Answers (Latest Update 2023) 120 Questions Nematoda - Correct Answers Lives in soil, water, animals, or plants. Unsegmented with a pseudocoelom. Some are pests, some are parasites. Move by undulation. Phylum Tarigrada - Correct Answers "water bears" microscopic segmented organisms that live in soil, mosses, or at the sediment at the bottom of the ocean. Eats bacteria, plants, or becomes a predator. Can survive extreme climates.