botany 105 vocab Flashcards
albuminous
has endosperm
incomplete flower
flower with missing whorl(s)
coenocytic
condition where nuclei is free floating within cytoplasm
zygosporangium
formed from diploid nuclei from fertilization, undergoes meiosis
yeasts
unicellular fungi
ectomycorrhizal fungi
forms sheaths around roots and penetrates between root cells
glyceraldehyde
sugar produced in photosynthesis
paraphyletic group
common ancestor and some, but not all, of its descendants
ovule
indehiscent, integumented megasporangium with one functional megaspore
sporophyll
modified leaf that bears sporangia
sporangium
multicellular individual which bears sporocytes which bear spores
gametophyte
multicellular haploid individual
gametangium
multicellular haploid structure that produces gametes
stamen
fertile floral structure consisting of an anther and filament; bears pollen
epicotyl
part of the embryo in a seed that becomes the upper part of the stem and leaves
apothecium
cup-shaped ascocarp (bears asci)
hypha/e
filament of fungal cells; forms mycelium
hartig net
a dense hyphal mass surrounding the roots in an ectomycorrhizal association
gamete
haploid cell that goes into fertilization
zygote
diploid cell produced by fertilization
ovuliferous scale
specialized stems that form female cone of conifers; has ovules that develop into seeds
seed
fertilized ovule
integument
a protective layer around sporangium
micropyle
an opening through the integument(s) of ovule through which pollen enters to fertilize egg
funiculus
a stalk-like structure that connects the ovule with the ovary wall
nucellus
megasporangium that contains embryo
dehiscence
natural breaking open of structure to release reproductive structures
sporocyte
diploid cell that produces spores by meiosis
pollen
microspore containing very reduced microgametophyte
generative cell
the cell that divides through mitosis and forms two sperm cells
pollination (gymnosperms)
bringing microgametophyte inside microspore inside ovule
pollination (angiosperms)
bringing microgametophyte contained in pollen grain into stigma of carpal
pollination syndrome
a set of adaptation in a plant that maximize pollination depending on its vector
seed dispersal syndrome
set of adaptations in a plant that maximizes its seed dispersal depending on its vector
dioecious
having male and female reproductive organs in separate plants or animals
monoecious
having male and female reproductive organs in the same plant or animal
calyx
whorl of sepals
corolla
whorl of petals
androecium
whorl of stamens
gynoecium
whorl of carpals
connation
fusion of parts within same whorl
adnation
fusion of parts between different whorls
syncarpous
fused carpals
apocarpous
unfused carpals
carpel
fertile floral structure on flower consisting of style and stigma; captures pollen
anther
pollen-bearing structure on stamen
pistil
unit of carpels within a flower
ovary
a flower structure that encloses and protects ovules and seeds as they develop
locule
an opening inside the ovary where the ovules are found
style
stalk that supports the stigma (in a carpel)
stigma
floral structure that captures pollen
placenta
floral structure within ovary where ovule attaches
embryo sac
female gametophyte within ovule of angiosperms
endosperm
a nutrient-rich tissues that provides nourishment to the developing embryo
exalbuminous
has no endosperm
hypocotyl
part of a plant embryo directly below the cotyledons, forming a connection with the radicle
radicle
first organ to emerge from germinating seed
hypanthium
the cuplike structure of a flower from receptacle which bears the floral whorls
complete flower
flower with all whorls present
perfect flower
flower with no fertile whorls missing
imperfect flower
flower with 1 or more fertile whorls missing
fruit
mature ovary of a flower
simple fruit
develops from a single carpel of one flower
aggregate fruit
developed from a single flower that has more than one carpel
accessory fruit
fruit derived from tissues other than the ovary
pericarp
ovary wall in fruit
chitin
polysaccharide found in arthropod exoskeletons and fungal cell walls
glycogen
storage carbohydrate in animals and fungi
clamp connection
a bypass formed during cell division in basidiomycetes that aids distribution on nuclei
ascus (asci)
a structure within the fruiting body where spores are formed during sexual reproduction
cleistothecium
ball-shaped ascocarp
perithecium
flask-shaped ascocarp
apothecium
cup-shaped ascocarp (bears asci)