Ecology Georgia High School Graduation Test: Science Review Mrs. Kirby.
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Transcript of Ecology Georgia High School Graduation Test: Science Review Mrs. Kirby.
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EcologyEcology
Georgia High School Graduation Test: Georgia High School Graduation Test: Science ReviewScience Review
Mrs. KirbyMrs. Kirby
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IntroductionIntroduction
From the key vocabulary, circle From the key vocabulary, circle the words that you can already the words that you can already define or use in a sentence.define or use in a sentence.
Write down two or three things Write down two or three things that you think are important for that you think are important for you to know today.you to know today.
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BiomesBiomes
BiomeBiome = a large area = a large area characterized by a certain characterized by a certain climate and types of plants climate and types of plants and animalsand animals
6 major biomes on Earth6 major biomes on Earth
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Biome CharacteristicsBiome CharacteristicsNameName CharacteristicsCharacteristics
TundraTundra permanently frozen subsoilpermanently frozen subsoil
TaigaTaigalong severe winters; long severe winters;
summers with thawing subsoilsummers with thawing subsoil
Temperate ForestTemperate Forest moderate precipitation; cold winters; moderate precipitation; cold winters; warm summerswarm summers
Tropical ForestTropical Forest heavy rainfall; constant warmthheavy rainfall; constant warmth
GrasslandGrassland variability in rainfall and temperature; variability in rainfall and temperature; strong windsstrong winds
DesertDesert sparse rainfall; extreme daily sparse rainfall; extreme daily temperature fluctuationstemperature fluctuations
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Biomes of the EarthBiomes of the Earth
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Ecosystem VocabularyEcosystem Vocabulary
EcosystemEcosystem = a part of the environment = a part of the environment with its organisms, their interactions, and with its organisms, their interactions, and the physical and chemical factors that the physical and chemical factors that affect themaffect them
CommunityCommunity = populations of different = populations of different species that interact in an ecosystemspecies that interact in an ecosystem
PopulationPopulation = all the individuals of the = all the individuals of the same species living in a communitysame species living in a community
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Members of an Members of an EcosystemEcosystem ProducersProducers = organisms that can = organisms that can
make their own food; autotrophs; make their own food; autotrophs; examples: bacteria, protists, examples: bacteria, protists, plantsplants
ConsumersConsumers = organisms that eat = organisms that eat other organisms to get energy; other organisms to get energy; heterotrophs; examples: fungi and heterotrophs; examples: fungi and animalsanimals
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Consumer ClassificationConsumer Classification HerbivoreHerbivore = primary consumer who only eats = primary consumer who only eats
plants; example: cowplants; example: cow CarnivoreCarnivore = secondary consumer who only eats = secondary consumer who only eats
other animals; examples: shark and tigerother animals; examples: shark and tiger OmnivoreOmnivore = consumer that eats both plants and = consumer that eats both plants and
animals; example: most humansanimals; example: most humans ScavengersScavengers = animals that find dead plants or = animals that find dead plants or
animals and eat them; examples: flies, wasps, animals and eat them; examples: flies, wasps, cockroaches, earthwormscockroaches, earthworms
DecomposersDecomposers = break down dead organisms to = break down dead organisms to receive energy; examples: fungi and bacteriareceive energy; examples: fungi and bacteria
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Predator versus PreyPredator versus Prey All animals must eat to survive. Animals can All animals must eat to survive. Animals can
be either predators or prey.be either predators or prey. Predators hunt prey.Predators hunt prey. With predators always on the lookout for a With predators always on the lookout for a
meal, prey must constantly avoid being meal, prey must constantly avoid being eaten. eaten.
Any adaptation the prey uses adds to the Any adaptation the prey uses adds to the chances of survival for the species.chances of survival for the species.
Some adaptations are defense mechanisms Some adaptations are defense mechanisms which can give the prey an advantage which can give the prey an advantage against enemies. against enemies.
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Survival Defense Survival Defense MechanismsMechanisms speed speed
You can’t eat what you can’t catch!You can’t eat what you can’t catch! physical or chemical featuresphysical or chemical features
physical examples: quills on a porcupine or physical examples: quills on a porcupine or hard shell of a turtlehard shell of a turtle
chemical examples: stink of a skunk; poisons chemical examples: stink of a skunk; poisons of a dart frogof a dart frog
camouflage camouflage allows the animal to blend in with its allows the animal to blend in with its
environment to avoid being detectedenvironment to avoid being detected used by both predators and preyused by both predators and prey
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Parasite versus HostParasite versus Host
A parasite is an animal or plant that A parasite is an animal or plant that lives in or on a host (another animal lives in or on a host (another animal or plant)or plant)
Parasites obtain nourishment from Parasites obtain nourishment from the host without benefiting or killing the host without benefiting or killing the hostthe host
Examples: canine heartworms, Examples: canine heartworms, malaria, hookworms, pinworms, malaria, hookworms, pinworms, tapewormtapeworm
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Food ChainFood Chain a diagram that shows a diagram that shows
the way energy is the way energy is transferred from one transferred from one organism to anotherorganism to another
each step in a food each step in a food chain is called a chain is called a trophic leveltrophic level
begins with begins with producers and ends producers and ends with decomposerswith decomposers
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Food Food WebWeb complex, complex,
interconnectinterconnecting food ing food chains in a chains in a communitycommunity
more more accurate accurate than food than food chainchain
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Pyramids of Pyramids of Biomass/EnergyBiomass/Energy
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Sample QuestionSample Question
Read and complete the Read and complete the sample question on page 10. sample question on page 10. We will discuss the answers We will discuss the answers as a class.as a class.
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DiscussionDiscussion
An ecosystem is like the community An ecosystem is like the community that you live in. What are important that you live in. What are important factors in your community? How is factors in your community? How is waste handled? Who are the waste handled? Who are the consumers and producers in your consumers and producers in your community? Are there any parasites community? Are there any parasites within your community?within your community?
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Lesson SummarizedLesson Summarized
Write a sentence that explains the Write a sentence that explains the flow of energy in an ecosystem.flow of energy in an ecosystem.
Draw a graphic organizer that Draw a graphic organizer that shows the relationships between shows the relationships between the various groups in a the various groups in a ecosystem.ecosystem.
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Short Quiz AnswersShort Quiz Answers1.1. See See tabletable summarizing characteristics. summarizing characteristics.2.2. The answer is b. Because there are few The answer is b. Because there are few
macroinvertebrates in the stream and macroinvertebrates in the stream and macroinvertebrates die in the presence macroinvertebrates die in the presence of heavy pollution, one can conclude that of heavy pollution, one can conclude that there is a great deal of pollution in the there is a great deal of pollution in the observed stream.observed stream.
3.3. The answer is a. The sun is the original The answer is a. The sun is the original source of energy because producers source of energy because producers receive energy from the sun.receive energy from the sun.