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Name: _______________________________
Ecology Notes: Symbiosis
Symbiosis and Competition: The way different species of organisms____________________________
_______________________________________________.
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Competition: When two or more organisms strive for the same_______________,
____________________, ___________________, or _________________.
•
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Predation: One organism __________________________ another.
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Example- wolves ________________________________________
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________________ feeding on ________________
Symbiosis
 Symbiosis: A relationship between organisms where _____________________________________
____________________________________
 3 types of relationships:___________________, ____________________, and _________________
Mutualism = _______________________________________________________ from the association.
 The example above is a lichen growing on the trunk of a mangrove tree.
 Consists of _____________ and an _____________ growing together.
 The fungus gets_________ from the ______________________________and the algae
gets a ___________________________________________
Mutualism (cont’d)
 Another example is algae and coral:
 Algae _______________________ and _____________________________________
 Algae receives ________________from the respiration of coral.
Parasitism
 The parasite-host relationship = ________________________________________________________
____________________________________________________
 Mistletoe is growing on a mangrove
 The mistletoe penetrates the bark of the mangrove and ______________________________________
 The mangrove is disadvantaged by this.
Commensalism= ________________________________________________________________________
__________________________________________________
An oyster has attached itself to a mangrove pneumatophore.
- The oyster has a solid _______________________________
- Mangrove is not ____________________________
Another example of Commensalism
Pilotfish follow around sharks for food: Sharks aren’t ____________________________, whereas pilotfish
_______________
The striped wrasse is cleaning bacteria and microorganisms from the giant moray eel’s
mouth.
1. Parasitism
2. Commensalism
3. Mutualism
4. They hate each other, like ew. They look awful together; there’s SO no relationship.
A sea otter, when eating, places a rock on its
stomach and bashes its prey on the rock to break the shell. It then
eats the soft parts inside.
Is this:
1. Parasitism
2. Predation
3. Commensalism
How about this? How do these plants interact?
The red and green leafed plants are growing from the tree’s nutrients. They are
two separate species of plants.
1. Parasitism
2. Commensalism
3. Mutualism
The clown fish (Nemo) resides in the sea anemone, providing cleaning
services for the anemone and a safe home for the clown fish.
1. Parasitism
2. Commensalism
3. Mutualism
4. No relationship
Epiphytes are types of plants that live on the branches of trees but do not
actually take nutrients from the tree. The flower (such as an orchid) only uses
the tree to gain a higher position- the tree gains/loses nothing.
Would this be:
 1. Parasitism
 2. Commensalism
 3. Mutualism
How about these guys... How do they relate to each other?
Little Halfmoons clean organisms off of the large Mola fish.
 1. Parasitism
 2. Commensalism
 3. Mutualism
 4. no relationship, but the chemistry is there.