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52 Cards in this Set
- Front
- Back
Plants are said to provide ecosystem services such as
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quality of the atm, surface water, and soil etc.
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Plants help the ecosystem in these 5 ways:
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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 |
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Define:
1. Herbivores 2. carnivores 3. omnivores |
1. "plant eaters"
2. "meat eaters" 3. "all eaters" |
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green plants are the key to what cycle
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the carbon cycle b/c they fix much more carbon dioxide than they release.
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When plants are removied, soils are susceptible to erosion by
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wind and water
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Plants are the basis for food chains (pyrimid)
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Producers (plant) --> primary consumers (herbivores) --> secondary consumers (carnivores) ---> Tertiary consumers
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What was responsibile for the org. domestication of plants?
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Artificial Selection
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These species are now being selected to preved diseases
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Tree species with special properties in their barks
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Plant characteristics can easily be changed with
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artificial selection such as with oil rich seeds vs. poor oil rich seeds
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How does COAL form?
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decayed plant material that is compacted over time
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Humans have relied on plant based fuels such as
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wood , coal, petroleum and natural gas
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Biorespecting
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compounds that can be used as drugs (quinine), fragrances , insecticides, herbicides, or fungicides
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plants use this method of plant growth to produce large amounts of defense chemicals
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hydroponically
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nonvascular plants include (3)...
and they lack |
liverworts, hornworts, and mosses
vascular tissue |
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seedless vascular plants include
They do not make what? |
seeds!
lycophytes, horsetails , whisk ferns, and ferns |
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seed plants are
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angiosperms and gymnosperms (trees)
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fossils of plants indicate the prescence
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of spores and sheets of wax coating called a cuticle
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the spores of fossils were covered with
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sporopollenin
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fossilized spores that are 475 million have specialized reproducing structures called
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sporangia
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The Fossil Record of Land Plants can be broken into 5 major intervals
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Origin of Land Plants--> explosion of diversity --> carboniferious--> gymnosperms abundant --> angiosperms abundant
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monophyletic or paraphyletic?
1. green algae 2. land plants |
1.paraphyletic
2. monophyletic |
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Transition to land
Benefits for green plants to survive on land: |
light and carbon dioxide
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Adaptations that land plants needed to have:
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1.prevention of water loss
2. transportation of water from tissues in direct contace to tissues removed from the area |
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THese two structures prevent water loss of the plant:
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1. cuticle
2. stomata |
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The cuticle is
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waxy, airtight sealant that helps waterloss
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pores on plants helped this process
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gas exhchange (stomata)
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guard cells further helped plants cell stomatas becuase they have the ability
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to regulate gas exchange and control water loss
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Transporting water against gravity was solved by
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vascular tissue solved the problem of becoming rigid enough to avoid falling over in response to gravity and wind
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some of the water-conducting plants have the molecule
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lingin which is thick and strong and sturdy to resist the force of gravity
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Define Tracheids
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water-conducting cells that are dead and empty at maturity
They have secondary cell walls reinforced with lingin |
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vessels
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are water conducting tissue that are unlike tracheids
vessels have gaps in their primary and secondary cell walls |
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All land plants have alternation of generations
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gametophytes and sporophytes
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Define:
1. gametophyte 2. sporophyte |
1. multicellular haploid stage
2.multicellular diploid stage |
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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 |
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The male gametophyte of seed plants is reduced to a microscopic structure called a
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pollen grain
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heterospory
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the production of two distinct types of spore producing structures and thus two disticnt types of spores
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seed plants are heterosporous
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1. microsporangia --> microspores --> male gametophyte --> sperm
2. megasporangia-->microspores--> female gametophyte --> eggs |
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most other plants are homosporous
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sporangium--> spores --> bisexual gametophyte --> sperm and eggs
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Where do sperm and eggs form?
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antheridium and archegonium
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Land plant embryos have specialized transfer cells
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which make psyscial contact w/ parental cells and facilitate the transfer of nutrients
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how to seed plants protect the seeds from drying?
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sporopollenin and they package an embryo with a food supply.
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Define fruit, ovary and ovulue.
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A fruit comes from the ovary that contains ovules that turn into seeds.
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Flowering plants or angiosperms are very succesful in large part of their reproductive structures. Describe it.
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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. |
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Pollination
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transfer of pollen to a plant's female reproductive organ, where eggs are produced and fertilization takes place.
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Pollination is aided when it is beneficial for an animal. How is this so?
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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 |
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Name 3 examples of how flowers attract diff. pollinators.
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carrion flowers smell like rotten fish
hummingbird-pollinated flowers have long tubes bumble-bee pollinated flowers are bright purple |
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What are the 4 morphological differences between monocots and dicots?
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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 |
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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 |
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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) |
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Name the Phylogenies that are related to
2. Bryophytes (non vascular plants) |
Liverworts (thrive in moist habitats)
Antrhocerophyta-hornworts- Byrophyta (mosses) |
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Name the Phylogenies that are related to
3. Seedless Vascular Plants |
Lycophyta (Club mosses)
Psilotophyta (whisk ferns) Sphenophyta (Horsetails) Pteridophyta (Ferns) |
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Name the Phylogenies that are related to
4. Seed Plants |
Gnetophyta
Cycadophyta (cyads) Ginkgophyta (Ginkgoes) Coniferophyta (conifers) Anthophyta (Angiosperms) |