BIO 172 UH Manoa Exam 2 Questions with Complete Correct Answers | Grade A+

Animals Ans: Multicellular eukaryotes Heterotrophs: Ingest their food Lack Cell Walls Body held together by structural proteins Collagen Ans: Make up connective tissues (fibers) Flexible and high tensile (stretching) Skin Ans: Dense irregular arrangement of collagen Ligament Ans: Collagen arranged in sheets (Connects Bones) Tendon Ans: Cable-like arrangement of collagen (Connects muscle to bone) Zygote Ans: Fertilized egg (Sperm+Egg=Zygote) Undergoes rapid cell division called cleavage Germ Layers Ans: Give rise to tissues and organs of animal embryo Blastula Ans: Cell that has undergone many cell cleavages Hollow blastula undergoes gastrulation, forming gastrula (has layers of embryonic tissues) Ectoderm Ans: Germ layer covering embryo surface Endoderm Ans: Innermost germ layer and lines developing digestive tube (aka=Archenteron) Diploblastic Ans: Animals that exhibit both ectoderm and endoderm in the embryo (Corals, jellyfish) Triploblasti