Chapter_29 - Chapter 29 Key Terms Freeman Adaptive...

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Chapter 29 Key Terms Freeman Adaptive Radiation o Rapid evolutionary diversification within one lineage, producing numerous  descendant species with a wide range of adaptive forms.  Alternation of Generations o A life cycle involving alternation of a multicellular haploid stage (Gametophyte)  with a multicellular diploid stage (Sporophyte).  Occurs in most plants and some  protists.  Angiosperms o A flowering plant; a member of the lineage of plants that seeds within mature  ovaries (fruits). Annual Plant o A plant whose life cycle normally lasts only one growing season – less than one  year. Antheridium o The sperm producing structure in most plants except angiosperms. Archegonium o The egg producing structure in most land plants except angiosperms. Artificial Selection o Deliberate manipulation by humans, as in animal and plant breeding, of the  hereditary traits of a population by allowing only certain individuals to reproduce. Bioprospecting o The search for naturally occurring compounds that can be useful to humans  (e.g., as drugs, fragrances, or insecticides).  Also called chemical prospecting.   Bryophytes o Several phyla of green plants that lack vascular tissue.  Includes liverworts,  hornworts, and mosses.  Also called nonvascular plants. Carnivores o Any animal whose diet consists predominantly of other animals. o Any member of the mammalian taxon Carnivora. (Most members of the  Carnivora are meat eaters.) Cotyledon o The first leaf or seed leaf, of a plant embryo.  Used for storing and digesting  nutrients and/or for early photosynthesis.  Cuticle o A protective coating secreted by the outermost layer of cells of an animal or  plant. Dicot
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o A dicotyledonous plant (i.e., any plant that has two cotyledons upon germination). Double Fertilization o An unusual form of reproduction seen in flowering plants, in which one sperm  nucleus fuses with an egg to form a zygote and the other sperm nucleus fuses  with two polar nuclei to form the triploid endosperm Ecosystem o All organisms that live in a geographic area, together with abiotic components  that affect or exchange materials with the organisms.
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