Plant Terms Flashcards
Storage polysaccharide in archaeplastida
Starch
Specialized structures in which gametes develop; bounded by a sterile layer (jacket) of cells
Jacketed gametangia
Immature sporophyte stage
Embryo (plant)
Waxy layer associated with plant epidermis
Cuticle (plant)
Spindle microtubules that persist into telophase of mitosis and are arrayed perpendicular to the plane of cell division
Phragmoplast
Region of cell division that forms at the apex of a growth axis
Apical meristem
Decay-resistant component or spore and/or pollen walls
Sporopollenin
The mosses
Bryophyta
The ferns
Pterophyta
The flowering plants (aka angiosperms)
Anthophyta
Opening in epidermal surface of plants; guard cell turgid determines if it is open or closed; site of gas exchange
Stomata (stoma)
Water (and inorganic ion) conducting tissue. Dead at functional maturity
Xylem
Sugar (in water) conducting tissue;alive at functional maturity
Phloem
Plant organ primarily associated with photosynthesis
Leaf
Plant organ primarily associated with support and transport
Stem
Plant organ primarily associated with anchoring and uptake of water and nutrients
Root
Function of one sperm nucleus with egg and fusion of second sperm nucleus with polar nuclei
Double fertilization
Diplobionic life history where distinct, multicellular haploid and multicellular diploid stages are present
Alternation of generation
The haploid (gametophyte) and diploid (sporophyte) stages are morphologically distinct from one another
Heterotrophic alternation of generation
Life history involving alternation of generations
Diplobionic
Life history where only one stage (haploid or diploid) is dominant, actively growing or multicellular
Haplobionic
Haploid phase in alternation of generation; produces gametes by mitosis (plus cytokinesis)
Gametophyte
Diploid phase in alternation of generation; produces spores by meiosis (plus cytokinesis)
Sporophyte
Plasmogamy with karyogamy; Union of gametes (often egg and sperm)
Fertilization
First cell (haploid) of the gametophyte generation
Spore (plant)
Diploid cell in a sporangioum that is destined to undergo meiosis to produce spores
Spore mother cell (sporophyte)
Specialized structure that contains spore mother cells that undergo meiosis to produce spores
Sporangium
Diploid cell which is (generally) the product of the Union of egg (female gamete) and sperm (male gamete)
Zygote
The mosses, liverworts, and hornworts
Bryophytes
Stalk-like structure that supports a sporangium
Seta
Jacketed gametangia me that produces sperm
Antheridia
Jacketed gametangia my that produces an egg
Archegonium
Another name for sporangium
Capsule
Tooth-shaped covering at apex of moss sporangia; teeth open and close in response to changes I humidity
Peristome teeth
Moss found in acid bog
Sphagnum
An aggregation of sporangia (ferns)
Sorus (sori)
Immature seed; when it is mature it is comprised of Integument, mega sporangium, and female gametophyte
Ovule
Ovule that has received pollen, when it is mature it is comprised of seed coat, mega sporangium (0r other nutritional tissue) and embryo
Seed
Naked-seeded plants (e.g. Conifers)
Gymnosperm
Seasonal or annual loss of plant structure– usually in reference to leaves
Decidious
Two types of spores are produced: micro and megaspores
Heterospory
Sporangium in which micro spores are produced by meiosis
Microsporangium
Diploid cell (in microsporangium) destined to undergo meiosis to produce micro spores
Microspores mother cell (aka microsporocyte)
Microspores develop into (x); develop in pollen in seed plants
Microgametophyte
Transport stage that contains the microgametophyte; in seed plants only
Pollen
Sporangium in which Megaspores are produced by meiosis
Megasporangim
Diploid cell (in megasporagium) destined to undergo meiosis to produce megaspores
Megaspores mother cell (aka megasporocyte)
First cell (haploid) of the mega gametophyte generation (the product of meiotic division of megaspores mother cell)
Megaspore