Download Good Buddies - Rach

Good Buddies
Objectives
NameHour-
Students will:
 define symbiosis, commensalisms, mutualism, and parasitism
 identify organisms that live in each type of symbiotic relationship
 describe how symbiotic interactions can be supportive or competitive
Method
Students research pairs of organisms and classify the pairs of organisms according
to three major forms of symbiotic relationships.
Background
Elements of any ecological system live in an intricate web of interdependence.
When two species of organisms live in close association with each other, their
relationship is called “symbiotic.” In a symbiotic relationship, at least one of the
organisms directly benefits from its close association with the other organism.
There are three major forms of symbiotic relationships:
Commensalisms: a relationship in which one species derives food or shelter from
another species without seriously harming that organism or providing any benefits
in return
Mutualism: a reciprocal relationship in which two different species benefit and are
dependent upon the relationship
Parasitism: a relationship between two species in which one species (the parasite)
nourishes itself to the detriment of the other species (the host)
Procedure:
Students should research their buddy pairs to find out why they are buddies.
Share results with other students. Go through the list of symbiotic pairs and
decide to which classification each pair belongs. Record you findings in the
following table. Make sure you find at least two examples for each of the
three types of symbiotic relationships described above.
Good Buddies
Buddies
Relationship Description
1.
2.
3.
4.
5.
6.
After researching the buddy pairs, answer the following questions.
1. Explain why each of these organisms live together.
2. What advantages and disadvantages do they provide for each other?
3. What would happen if one of the buddies were not there?
4. Determine which interactions are supportive and which are competitive.
Good Buddies
Good Buddies
Relationship
1.barnacle/whale
c
2.remora/shark
C
3.bee/marabou stork
C
4.silverfish/army ants
C
5.hermit crab/ snail shell
C
6.cowbird/bison
C
7.yucca plant/ yucca moth
M
8.honey guide bird/ badger
M
9.ostrich/gazelle
M
10.oxpecker/rhinoceros
M
11.wrasse fish/black sea bass
M
12.mistletoe/spruce tree
P
13.cuckoo/warbler
P
14.mouse/ flea
P
15.deer/tick
P
16.aphid/ant
C
17.lamprey/trout
P
18.bees/apple trees
M
19.orchid/tree
C
20.trichonympha/termites
M
21.algae/coral
M
22.pilot fish/shark
M
23.”lichen” (algae/fungus)
M
24.mycorrhizae (fungus/ roots)
M
25.legumes/Rhizobium bacteria M
26.crockodile/plover
M
27.Plasmodium vivax/humans
P
28.fluke/sheep
P
29.trichina/pigs
P
30.gut flora/humans
M
Descriptions
1.barnacle/whale
1.barnacle/whale
2.remora/shark
2.remora/shark
3.bee/marabou stork
3.bee/marabou stork
4.silverfish/army ants
4.silverfish/army ants
5.hermit crab/ snail shell
5.hermit crab/ snail shell
6.cowbird/bison
6.cowbird/bison
7.yucca plant/ yucca moth
7.yucca plant/ yucca moth
8.honey guide bird/ badger
8.honey guide bird/ badger
9.ostrich/gazelle
9.ostrich/gazelle
10.oxpecker/rhinoceros
10.oxpecker/rhinoceros
11.wrasse fish/black sea bass
11.wrasse fish/black sea bass
12.mistletoe/spruce tree
12.mistletoe/spruce tree
13.cuckoo/warbler
13.cuckoo/warbler
14.mouse/ flea
14.mouse/ flea
15.deer/tick
15.deer/tick
16.aphid/ant
16.aphid/ant
17.lamprey/trout
17.lamprey/trout
18.bees/apple trees
18.bees/apple trees
19.orchid/tree
19.orchid/tree
20.trichonympha/termites
20.trichonympha/termites
21.algae/coral
21.algae/coral
22.pilot fish/shark
22.pilot fish/shark
23.”lichen” (algae/fungus)
23.”lichen” (algae/fungus)
24.mycorrhizae (fungus/ roots)
24.mycorrhizae (fungus/ roots)
25.legumes/Rhizobium bacteria
25.legumes/Rhizobium bacteria
26.crockodile/plover
26.crockodile/plover
27.Plasmodium vivax/humans
27.Plasmodium vivax/humans
28.fluke/sheep
28.fluke/sheep
29.trichina/pigs
29.trichina/pigs
30.gut flora/humans
30.gut flora/humans
31.giant tube worm/bacteria
31.giant tube worm/ bacteria
32.acacia tree/ant
32.acacia tree/ant
33. cuckoo fish/cichlid
33.cuckoo fish/cichlid
barnacle/whale
remora/shark
bee/marabou stork
silverfish/army ants
hermit crab/ snail shell
cowbird/bison
aphid/ant
orchid/tree
yucca plant/ yucca moth
honey guide bird/ badger
ostrich/gazelle
oxpecker/rhinoceros
wrasse fish/black sea bass
bees/apple trees
trichonympha/termites
algae/coral
pilot fish/shark
”lichen” (algae/fungus)
mycorrhizae (fungus/ roots)
legumes/Rhizobium bacteria
crocodile/plover
gut flora/humans
giant tube worm/bacteria
acacia tree/ant
cuckoo fish/cichlid
Plasmodium vivax/humans
fluke/sheep
trichina/pigs
lamprey/trout
mistletoe/spruce tree
cuckoo/warbler
mouse/ flea
deer/tick
acacia tree/ant
barnacle/whale
cuckoo fish/cichlid
remora/shark
yucca plant/ yucca moth
barnacle/whale
bee/marabou stork
legumes/Rhizobium bacteria
mistletoe/spruce tree
mycorrhizae (fungus/ roots)
bee/marabou stork
fluke/sheep
giant tube worm/bacteria
oxpecker/rhinoceros
silverfish/army ants
aphid/ant
bees/apple trees
cuckoo/warbler
hermit crab/ snail shell
pilot fish/shark
cowbird/bison
gut flora/humans
hermit crab/ snail shell
”lichen” (algae/fungus)
trichina/pigs
algae/coral
aphid/ant
crocodile/plover
lamprey/trout
orchid/tree
mouse/ flea
ostrich/gazelle
remora/shark
silverfish/army ants
trichonympha/termites
cowbird/bison
deer/tick
honey guide bird/ badger
orchid/tree
wrasse fish/black sea bass