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AP Biology chap 30

seed plants

Terms : Hide Images
19585700sporophytethe spore-producing individual or phase in the life cycle of a plant having alternation of generations
19585701seedembryo of a living plant that is encased in a protective covering and surrounded by a food supply
19585702integumentslayers of sporophyte tissue that envelop and protect the megasporangium in gymnosperms.
19585703ovulethe structure composed of a megasporangium, megaspore, and their integuments.
19585704heterosporousA term referring to a plant species that has two kinds of spores: microspores that develop into male gametophytes and megaspores that develop into female gametophytes.
19585705megasporangiawhere megaspores are produced from meiosis of megaspore mother cells
19585706microsporangiawhere microspores are produced that give rise to male gametophytes. the microsporangium is contained within a pollen grain
19585707sporophyllsModified scalelike leaves of gymnosperms where ovules and seeds develop on the surface
19585708sporangiamulticellular organs that produce spores
19585709monocotsA clade consisting of flowering plants that have one embyonic seed leaf, or cotyledon.
19585710dicotsTwo cotyledons. Flower parts in fours or fives, vascular tissue in distinct bundles arranged in a circle, taproot system, leaves with netted veins.
19585711vascular tissueSpecialized tissue that transport water and nutrients to plant consists of xylem and phloem
19585712xylemplant vascular tissue that carries water and minerals from the roots up through a plant;helps support a plant
19585713tracheidslong, tapered xylem cells, provide mechanical support and transport water
19585714flowerreproductive organ of angiosperm plants especially one having showy or colorful parts
19585715flower parts4 circles of modified leaves: sepals. petals, stamens, carpels
19585716sepalsOutermost leaf part of flower; protects bud
19585717petalsparts above sepals usually colored
19585718stamensthe male reproductive structures, the sporophylls that produce microspores,consist of anther and a filament
19585719carpelsThe female reproductive organ of a flower,that make megaspores consisting of the stigma, style, and ovary.
19585720filamentthe stalk of a stamen
19585721antherthe terminal pollen sac of a stamen where pollen grains with male gametes form
19585722stigmasticky part on the end of the carpel (also called pistil) that captures pollen grains
19585723stylethe narrow elongated part at the base of the carpel ( also called pistil) that leads to the ovary
19585724fruita mature ovary, ovaries are only in angiosperms
19585725pericarpthe thickened wall of a fruit, used to be the ovary.
19585726cross pollinationtransfer of pollen from flower of one plant to the sticky stigma of another plant
19585727double fertilizationunique to angiosperms, term used to describe one sperm fusing with the egg, while the other fuses with two nuclei in the large central cell of the famale gametophyte.results in triploid nucleus 3n
19585728cotyledonsThe structures where food is stored in seeds composed of one or two seed leaves
19585729endosperma triploid tissue providing food for the embryo in angiosperms
19585730ovulesStructure that develops within ovary of seed plant and contains female gametophyte.

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