Name:&___________________________________________________&Per.:&_______&Date:&_________________&Assignment&#:&_______&Symbiosis(Worksheet(&Pre$Video)Questions)

1. Define&the&term&“symbiosis”&________________________________________________________________________________&

_________________________________________________________________________________________________________________&

2. Classify&the&following&examples&as&predation,&commensalism,&mutualism,&or&parasitism:&&Example) Classification)

Barnacles&create&home&sites&by&attaching&

themselves&to&whales&

&

Ticks&feed&on&deer&blood& &

A&wolf&hunts&for&young&elk& &

A&honey&badger&follows&a&honeyguide&bird&to&a&

beehive,&where&they&both&feed&on&the&honey&

&

Ostriches&and&gazelles&feed&next&to&each&other.&&

They&both&watch&for&predators&and&alert&each&other&

to&danger.&&Since&the&visual&abilities&of&the&two&

species&are&different,&they&each&can&identify&threats&

the&other&animal&would&not&as&readily&see.&

&

Hermit&crabs&live&in&shells&made&and&then&

abandoned&by&snails.&

&

As&buffalos&walk&through&the&grass,&insects&become&

active&and&are&seen&and&eaten&by&cowbirds.&

&

Oxpeckers&are&a&type&of&bird&that&feed&on&ticks&

found&on&rhinos.&

&

Mistletoe&lives&on&spruce&trees,&and&extracts&the&

tree’s&water&and&nutrients.&

&

Tapeworms&live&inside&human&intestines&and&take&

nutrients&that&the&human&consumes.&

&

&&3. What&do&sharks&feed&on?&&___________________________________________________________________________________&

_________________________________________________________________________________________________________________&4. Do&you&believe&that&sharks&are&good&or&bad?&&Why?&&______________________________________________________&

__________________________________________________________________________________________________________________________________________________________________________________________________________________________________&

&&

Video)Questions:)Ecological)Relationships)Interacting)Species)Pair) Ecological)Relationship)

Prediction))(Predict)whether)it)will)be)predation,)commensalism,)mutualism,)or)parasitism))

Actual)Relationship)(Identify)the)correct)relationship)AND)describe)what)specifically)happens))

Clip&1&(starts&at&3:30):&Tiger&Shark&&&Loggerhead&Turtle&&

&

& &

Come&up&with&your&own&example&from&the&video&&&&List&it&here:&&&&&

& &

Clip&2&(starts&at&7:00Y12:00):&Whitetip&Shark&&&Jack&fish&

&

& &

Clip&2:&Shark&&&Mackerel&&

&

& &

Clip&2:&Shark&&&Shark&Suckerfish&&&

&&

& &

Clip&2:&Hammerhead&Shark&&&Barberfish&&&

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& &

Clip&3&(starts&at&45:00):&Shark&&&Fishermen&&&

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& &

&Post$Video)Questions))

1. Why&are&humans&fishing&sharks?&&__________________________________________________________________________&__________________________________________________________________________________________________________________________________________________________________________________________________________________________________&

2. If&sharks&disappear&from&their&communities,&what&effect&might&that&have&on&other&organisms?&&___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________&

3. What&is&something&that&people&are&doing&or&can&do&in&order&to&help&shark&communities?&&&___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________&

4. Identify&the&organism&that&fits&the&niche&description:&&a. ___________________________&Makes&webs&and&eats&insects&&b. ___________________________&Specialist&that&feeds&on&bamboo&&c. ___________________________&&Lives&on&both&wild&and&household&animals,&feeding&on&blood&and&

causes&itching.&&&d. ___________________________&Builds&dams&to&flood&an&area&and&make&deep&ponds.&&&

5. &Diagram&and&label&each&of&the&three&symbiotic&relationships:&&Commensalism) Mutualism) Parasitism)

& &&&&

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