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52 Cards in this Set

  • Front
  • Back
Plants are said to provide ecosystem services such as
quality of the atm, surface water, and soil etc.
Plants help the ecosystem in these 5 ways:
1.Plants produce oxygen
2. plants build soil by putting organic matter back in
3. Plants hold water
4. Plants hold soil which can be lost to erosion by the wind and water
5. Plants moderate the local cimate
Define:
1. Herbivores
2. carnivores
3. omnivores
1. "plant eaters"
2. "meat eaters"
3. "all eaters"
green plants are the key to what cycle
the carbon cycle b/c they fix much more carbon dioxide than they release.
When plants are removied, soils are susceptible to erosion by
wind and water
Plants are the basis for food chains (pyrimid)
Producers (plant) --> primary consumers (herbivores) --> secondary consumers (carnivores) ---> Tertiary consumers
What was responsibile for the org. domestication of plants?
Artificial Selection
These species are now being selected to preved diseases
Tree species with special properties in their barks
Plant characteristics can easily be changed with
artificial selection such as with oil rich seeds vs. poor oil rich seeds
How does COAL form?
decayed plant material that is compacted over time
Humans have relied on plant based fuels such as
wood , coal, petroleum and natural gas
Biorespecting
compounds that can be used as drugs (quinine), fragrances , insecticides, herbicides, or fungicides
plants use this method of plant growth to produce large amounts of defense chemicals
hydroponically
nonvascular plants include (3)...
and they lack
liverworts, hornworts, and mosses
vascular tissue
seedless vascular plants include
They do not make what?
seeds!
lycophytes, horsetails , whisk ferns, and ferns
seed plants are
angiosperms and gymnosperms (trees)
fossils of plants indicate the prescence
of spores and sheets of wax coating called a cuticle
the spores of fossils were covered with
sporopollenin
fossilized spores that are 475 million have specialized reproducing structures called
sporangia
The Fossil Record of Land Plants can be broken into 5 major intervals
Origin of Land Plants--> explosion of diversity --> carboniferious--> gymnosperms abundant --> angiosperms abundant
monophyletic or paraphyletic?
1. green algae
2. land plants
1.paraphyletic
2. monophyletic
Transition to land
Benefits for green plants to survive on land:
light and carbon dioxide
Adaptations that land plants needed to have:
1.prevention of water loss
2. transportation of water from tissues in direct contace to tissues removed from the area
THese two structures prevent water loss of the plant:
1. cuticle
2. stomata
The cuticle is
waxy, airtight sealant that helps waterloss
pores on plants helped this process
gas exhchange (stomata)
guard cells further helped plants cell stomatas becuase they have the ability
to regulate gas exchange and control water loss
Transporting water against gravity was solved by
vascular tissue solved the problem of becoming rigid enough to avoid falling over in response to gravity and wind
some of the water-conducting plants have the molecule
lingin which is thick and strong and sturdy to resist the force of gravity
Define Tracheids
water-conducting cells that are dead and empty at maturity
They have secondary cell walls reinforced with lingin
vessels
are water conducting tissue that are unlike tracheids
vessels have gaps in their primary and secondary cell walls
All land plants have alternation of generations
gametophytes and sporophytes
Define:
1. gametophyte
2. sporophyte
1. multicellular haploid stage
2.multicellular diploid stage
spores grow in this particular way
what are they encased in?
grow directly into a multicelluar individual w/o fusing with another cell
they are encased in a tough, watertight coat made of sporopollenin
The male gametophyte of seed plants is reduced to a microscopic structure called a
pollen grain
heterospory
the production of two distinct types of spore producing structures and thus two disticnt types of spores
seed plants are heterosporous
1. microsporangia --> microspores --> male gametophyte --> sperm

2. megasporangia-->microspores--> female gametophyte --> eggs
most other plants are homosporous
sporangium--> spores --> bisexual gametophyte --> sperm and eggs
Where do sperm and eggs form?
antheridium and archegonium
Land plant embryos have specialized transfer cells
which make psyscial contact w/ parental cells and facilitate the transfer of nutrients
how to seed plants protect the seeds from drying?
sporopollenin and they package an embryo with a food supply.
Define fruit, ovary and ovulue.
A fruit comes from the ovary that contains ovules that turn into seeds.
Flowering plants or angiosperms are very succesful in large part of their reproductive structures. Describe it.
The success of a species of angiosperms depends upon the reproductive organ: the flower.
They do not produce gametangia. Gametes are produced in male and female gametophytes which come from the microsporangia and megasporangia of the flower.
Pollination
transfer of pollen to a plant's female reproductive organ, where eggs are produced and fertilization takes place.
Pollination is aided when it is beneficial for an animal. How is this so?
animals/insects favor flower color and shapes and scents that are sucessful in attracting particular types of pollinators

food for the animals such as nectar
Name 3 examples of how flowers attract diff. pollinators.
carrion flowers smell like rotten fish
hummingbird-pollinated flowers have long tubes
bumble-bee pollinated flowers are bright purple
What are the 4 morphological differences between monocots and dicots?
monocots=
cotyledon, vascular tisue scattered, parallel veins in leaves, and flower petals in multiples of 3
Dicots= two cotyledons, vascular tissue in circular arrangement in stem, branching veins in stems, and flower petals in multiples of 4 or 5
lichens
What are other places where green algae come from?
What is pink snow?
associations of green algae with fungi or cyanobacteria
unicellular protists harbor green algae
snowfields that have an abundant amount of green algae color snow pink or green
Name the Phylogenies that are related to
1. Algae
1. Ulvobionta (primary producers)
Coleochaetales ( thin sheets of cells)
Charales-Stoneworts- (form beds at the bottom of lakes)
Name the Phylogenies that are related to
2. Bryophytes (non vascular plants)
Liverworts (thrive in moist habitats)
Antrhocerophyta-hornworts-
Byrophyta (mosses)
Name the Phylogenies that are related to
3. Seedless Vascular Plants
Lycophyta (Club mosses)
Psilotophyta (whisk ferns)
Sphenophyta (Horsetails)
Pteridophyta (Ferns)
Name the Phylogenies that are related to
4. Seed Plants
Gnetophyta
Cycadophyta (cyads)
Ginkgophyta (Ginkgoes)
Coniferophyta (conifers)
Anthophyta (Angiosperms)