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Science 9cience 9

Unit A:nit A: Biological Diversityiological DiversityScience InActioncience InActionSection 1: Page 8-25ection 1: Page 8-25


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Lesson #1esson #1Learner Outcomeearner Outcome

I can observe variation in livingI can observe variation in living

things, and describe examples ofthings, and describe examples of

variation among species andvariation among species andwithin specieswithin species


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Grade 7 Reviewrade 7 ReviewAll l iving things are:

1. made up ofcells2. need energy3. grow and develop4. reproduce and have adaptations5. which suit them to the specifichabitat in which they live.


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Describe the Variety ofescribe the Variety ofBiological Species on Earth.iological Species on Earth.AASpeciespecies is ais a

particular group ofparticular group of

organisms that haveorganisms that have

the same structurethe same structure

and can reproduceand can reproduce

with each other.with each other.

1.5 mill ion species.5 mill ion speciesof animals identifiedof animals identified

350 00050 000 species ofspecies ofplants.plants.

Most successful is theMost successful is theinsectnsect


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What is Biologicalhat is BiologicalDiversity?iversity? it is theit is thevarietyariety ofof

speciesspeciesandandecosystemsecosystemsonon

the Earth and thethe Earth and the

ecologicalecological

processes of theyprocesses of they

are a part of.are a part of.

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What are the mainhat are the maincomponents of Biologicalomponents of BiologicalDiversity?iversity?1. Diversity Between Ecosystems. Diversity Between Ecosystems

Bioticiotic andand Abioticbiotic organisms interactingorganisms interacting


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What are the mainhat are the maincomponents of Biologicalomponents of BiologicalDiversity?iversity?2. Diversity Within. Diversity WithinEcosystemscosystems

Commun i t i e sommun i t i e s different differentspecies living in the samespecies living in the samearea.area.

Popu la t i onsopu la t i ons members of members ofthe same species that livethe same species that livein a specific area and sharein a specific area and sharethe same resources.the same resources.


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What are the mainhat are the maincomponents of Biologicalomponents of BiologicalDiversity?iversity?3. Diversity within species.. Diversity within species.

IndividualsIndividuals withinithin the species.the species. Genetic differencesenetic differences at the cellular level.at the cellular level.
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What are the mainhat are the maincomponents of Biologicalomponents of BiologicalDiversity?iversity?4. Species. SpeciesDistributionistribution

Not distributed evenlyNot distributed evenly

Lessessbiological diversityiological diversityas you move closer toas you move closer tothethe polesoles ..
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What isWhat is Variationariation?? Variabilityariability within awithin aspecies population.species population. Brown Hair vs. Blond HairBrown Hair vs. Blond Hair Blue eyes vs. Green eyes.Blue eyes vs. Green eyes.

Examples of variability inthe animal kingdominclude:

Red fox (color of coat) Antibiotic resistance(bacteria)

Banded snail (color ofshell)


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What areWhat are Niches?iches? N i chei che is theis the role of anole of anorganismrganism within a particularwithin a particular

ecosystem.ecosystem. Includes:ncludes:1. What it eats.1. What it eats.

2. What eats it.2. What eats it.

3. Its habitat.3. Its habitat.

4. Nesting site, range and4. Nesting site, range and

habits.habits.

5. What effect it has on the5. What effect it has on theother populations.other populations.

6. What effect it has on the6. What effect it has on theenvironment.environment.


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Biological Diversity Classif icationiological Diversity Classif icationThe two-name Latin naming system for all living

things was developed by Carolus Linnaeus inthe 18th century.

Enables scientists, around the world, to refer tothe same species, by the same name.

Two words identify each organism.The 1st represents the organisms genusand the

2nd represents the organisms particular species.


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Biological Diversityiological DiversityClassif icationlassif icationAnimalianimalia animals, animals, Plantaelantae plants, plants,Fungiungi yeasts and moulds, yeasts and moulds, Protistarotista single cells, single cells,Moneraonera - bacteria- bacteria


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Classif ication Exampleslassif ication ExamplesCommonName SpeciesName(includesGenus/Species)

Genus Family Order Class Phylum(Division) Kingdom

Humans Homosap i ens

H omo Hominidae Primates Mammalia Chordata Animalia

Rhesusmonkey Macac amu l a t t a Mac ac a Cercopithecidae

Leopardfrog Ranap ip i ens R an a Ranidae Anura Amphibia

Wood frog Ranasy l va t i c a


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Species Comparisonspecies Comparisons


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Sample Multiple Choiceample Multiple ChoiceQuestionuestionOrganismrganism Classlass Genusenus Phylumhylum Speciespecies1 Mammaliaammalia Castorastor canadensisanadensis2 Mammaliaammalia Canisanis Chordatahordata Latransatrans3 Lutrautra Chordatahordata Canadensisanadensis4 Canisanis lupusupus

Which of the fol lowing organisms aremost similar?

a. 1 and 2b. 2 and 4c. 2 and 3d. 1 and 3

Q1


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Sample Multiple Choice Questionample Multiple Choice QuestionThe Linnaean classification system is aThe Linnaean classification system is atwo-nametwo-name system. The two namessystem. The two names

every species have are aevery species have are a

a.a. Family name and a given nameFamily name and a given name

b.b. Scientific name and a common nameScientific name and a common namec.c. Genus name and a species nameGenus name and a species name

d.d. Kingdom name and an order nameKingdom name and an order name

Q2


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Sample Multiple Choiceample Multiple ChoiceQuestionuestion

Sea hares have a special ink-producing gland. They use thisSea hares have a special ink-producing gland. They use this

gland to spread purple ink in the water because itgland to spread purple ink in the water because it

a.a. Is an important secretion of their bodyIs an important secretion of their body

b.b. Is and excretory productIs and excretory product

c.c. Helps to confuse predators so it can escapeHelps to confuse predators so it can escape

d.d. Gives a purple colour to its bodyGives a purple colour to its body

Moles dig burrows and are called fussorial while deer orMoles dig burrows and are called fussorial while deer or

stag run very fast and are called cursorial. Some speciesstag run very fast and are called cursorial. Some species

change their features and camouflage, while other developchange their features and camouflage, while other develop

special protective structures.special protective structures.

Q3


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Answers to Sample Multiplenswers to Sample MultipleChoice Questionshoice Questions1.1. BB

2.2. CC

3.3. CC


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Did you id you observe variation inbserve variation inl iving things, andiving things, anddescribe examples ofescribe examples ofvariation amongariation amongspecies and withinpecies and withinspecies?pecies?

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