ch 30 plant diversity II Flashcards
seed
consists of an embryo and its food supply, surrounded by a protective coat
heterospory
2 kinds of spores
integument
a layer of sporophyte tissue, envelopes and protects the megasporangium
ovule
the whole structure, megasporangium, megaspore, and integument
pollen grain
microspore developes into this
consists of a male gametophyte enclosed in the pollen walls
pollination
the transfer of pollem to the part of a seed that contains the ovules
conifers
cone bearing plants, pines, firs, red woods
sepals
green and encloses flower before opening
petals
brightly colored to attract pollenators
stamens
produce microspores that develope into pollen grains containing male gametophytes
filament
stalk
anther
pollen is produced
carpals
megaspore, femal gametophyte
stigma
tip that recieves pollen
style
leads from stigma to ovary
ovary
contains one or more ovules
ovules
turn into seeds
embryo sack
each ovule, which developes in the ovary, contains a female gametophyte
cross pollination
the transfer of pollen from an anther of a flower on one plant to the stigma on another plant of the same species
micropyle
pore in the integument of the ovule
double fertilization
a fertilization event that produces a zygote and the other produces a triploid cell
cotyledons
one or two seed leaves
endosperm
tissue rich in starch and other food reserves that nourish the developing embryo
monocot
one cotyledon
eudicots
2 cotyledons
