BIO 1150 Exam 3 - Questions with Verified Answers

BIO 1150 Exam 3 - Questions with Verified Answers Derived traits of land plants Alternation of generations Multicellular, dependent embryos Walled spores produced in sporangia Multicellular gametangia Apical meristems Symbiotic relationships with fungi Cuticle A waxy covering on the surface of stems and leaves that acts as an adaptation to prevent desiccation in terrestrial plants. Lignin Substance in vascular plants that makes cell walls rigid Sporophyte The stage in the life cycle of a plant in which the plant produces spores. Gametophyte The stage in the life cycle of a plant in which the plant produces gametes, or sex cells. Non-vascular plants Include hepatophyta, bryophyta, and anthocerophyta. Sporophytes small, gametophytes large Peat Partially decayed plant matter found in bogs; stores 30% carbon Seedless vascular plants Lycophyta, pterophyta Sporophytes dominate the life cycle What is the common name for hepatophyta? Liverworts What is the common name for bryophyta? Mosses What is the common name for anthocerophyta? Hornworts What is the common name for lycophyta? Club mosses, quillworts What is the common name for pterophyta? Ferns Which phylum contains the most diverse of the seedless vascular plants? Pterophyta Xylem Vascular tissue that carries water upward from the roots to every part of a plant; mostly dead Phloem Living vascular tissue that carries sugar and organic substances throughout a plant; partially alive Sori Fern structures in which spores are produced Strobili Cone-like structures that contain the sporangia Derived traits of seeded plants -Reduced gametophytes -Heterospory -Ovules -Pollen -Seeds Heterospory The production of two distinct types of spores by different structures Microsporangia Produce microspores that give rise to male gametophytes Megasporangia Produce megaspores that give rise to female gametophytes Ovule Female reproductive structure of a seed plant where the haploid egg develops Gymnosperm "Naked seeds", such as pine cones and other conifers. 1 integument Angiosperm A flowering plant which forms seeds inside a protective chamber called an ovary 2 integuments Evolutionary advantage of seeds -a seed may remain dormant until favorable conditions trigger germination -are a variety of dispersal agents: wind, animals, water -stored supply of food Stigma The part of the pistil where pollen germinates. Style The stalk of a flower's carpel, with the ovary at the base and the stigma at the top. Ovary A flower structure that encloses and protects ovules and seeds as they develop. Stamen The