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21 terms

Plants chap 29

chapter 29
STUDY
PLAY
desiccation
drying out
cover skin with water impermeable layer
cuticle
waxy later on epidermis
stomo(ata)
openings in cuticle for gas exchange
root system
underground sytstem
anchors
absorbs water
shoot system
above ground
stems, leaves, reproductive parts
xylem
water from roots -> leaves
phloem
sugars from leaves -> roots
gametophytes
make gametes - sperm and eggs
fragile
sporophytes
makes spores, heavy walls
bryophytes
small, few in number, nonvascular
phylum hepatophyta
liverworts (herbs)
phylum anthocerophyta
hornworts
phylum bryophyta
mosses
exosporic development
outside of the spore
endosporic development
inside the spore
seedless vascular plants
ferns, horsetails, spike mosses
seed plants
pine trees, ginkgo, flowering plants
type 1
large gametophytes, bisexual, exosporic, one kind of spore
type 2
2 kinds of spores, mega & micro spores
type 3
2 kinds of spores, unisexual gametophytes, endosporic, retention of the megaspore
pollination vs fertilization
pollen reaches pollination droplet on ovule vs.
sperm fertilizes the egg