Even More Plants Flashcards
micronutrient needed for regeneration of phosphoenolpyruvate in C4 and CAM pathways
sodium
yellowing of leaves
chlorosis
causes chlorosis in older leaves between veins
magnesium deficiency
causes chlorosis at tips of older leaves
nitrogen deficiency
causes mottling of older leaves with drying of leaf edges; weak stems; and poorly developed roots
potassium deficiency
causes crinkling of young leaves and death of terminal buds
calcium deficiency
causes slow development, thin stems, purpling of veins, poor flowering and fruiting
phosphorus deficiency
causes chlorosis in young leaves
sulfur deficiency
mycorrhizae that form a dense sheath, or mantle, of mycelia over the surface of the root; form a network in the apoplast
Ectomycorrhizae
mycorrhizae that push in the plasma membrane and branch
Arbuscular mycorrhizae
soil closely surrounding plant roots
rhizosphere
enzyme that drives nitrogen fixation in rhizobacteria
nitrogenase
plant cells “infected” by Rhizobium bacteria
nodules
form within vesicles that rhizobium takes
bacteroids
iron containing protein that binds reversibly to oxygen in nodules, keeping them anaerobic
leghemoglobin
part of the stem where floral organs attach
receptacle
“flowers” that are clusters of smaller flowers
Inflorescences
ultraviolet markings on flowers for bees
nectar guides
joint evolution of two interacting species
coevolution
epicotyl, young leaves, and shoot apical meristem
plumule
region of an embryo or seedling stem above the cotyledon
epicotyl
part of the stem of an embryo plant beneath the stalks of the seed leaves or cotyledons and directly above the root
hypocotyl
single cotyledon in monocots
scutellum
sheaths the rudimentary seed shoot in monocots
coleoptile
sheaths the rudimentary seed root in monocots
coleorhiza
uptake of water due to the low water potential of the dry seed
imbibition
rudimentary seed root
radicle
fruit derived from a single carpel or several fused carpels
simple fruit
fruit derived from single flower with more than one separate carpel, each forming a small fruit
aggregate fruit
fruit formed from an inflorescence
multiple fruit
fruit not developed from ovary; like a receptacle instead
accessory fruit
asexual production of seeds
apomixis
mass of dividing, undifferentiated totipotent cells at wounded end of plant cutting
callus
Some plants usually self-fertilize
“selfing”
flowers that lack stamens
carpellate
flowers that lack carpels
staminate
ability of a plant to reject its own pollen and the pollen of closely related individuals
self-incompatibility
severed shoot from one plant is permanently joined to the truncated stem of another
grafting
twig grafted onto the stock in grafting
scion
supplemented with transgenes that enable it to produce grain with increased levels of betacarotene, a precursor of vitamin A
“Golden rice”
Bt maize transgenes
Bacillus thuringiensis
highly resistant to degradation; produced by a fungus (Fusarium) that infects insect-damaged maize
Fumonisin
cellulose and hemicellulose turned into alcohol
biofuels
growth of morphological adaptations for growing in darkness in plants grown in darkness
etiolation