1. 10/28/14
Life Science
Pre-Test on next unit
Community Interaction Notes/Chart
Play Good Buddies
Biosphere – abiotic vs biotic

2. COMMUNITY INTERACTIONS limit population numbers Predation Symbiosis
PARASITISM
MUTUALISM
COMMENSALISM
Examples

3. One species benefits by eating an animal and the other is dead.
PREDATION
One species benefits by eating an animal and the other is dead.
PREDATOR
PREY
eater
eaten

4. THE CLOSE INTERACTION BETWEEN TWO OR MORE ORGANISMS OF DIFFERENT BIOLOGICAL SPECIES
at least one member of the association benefits (gains) by the association

5. Both biological species benefit from the++
SYMBIOSIS
MUTUALISM
Both biological species benefit from the
close relationship.
The hummingbird hawk moth
gathers nutrients from the flower,
while it helps with pollination.
The sea anemone provides shelter
and protection for the clownfish while
the clownfish eats small invertebrates
that are harmful to the sea anemone.
The Nile crocodile opens its
mouth for the Egyptian plover
to clean it of leeches.

6. relationship and the other is neither harmed nor benefitting.
SYMBIOSIS +0
COMMENSALISM
One species benefits from the
relationship and the other is neither harmed nor benefitting.
The barnacles benefit by attaching themselves to the turtle's shell for a home and transportation. The turtle is not benefitting or being harmed in this relationship.
The pea crab benefits from the oyster because it has a home and protection. The oyster is neither benefitting or being harmed in this relationship.
The epiphytic benefits from the tree because it is exposed to more sunlight by being higher up in the canopy. The tree is not benefitting or being harmed in this relationship.

7. relationship and the other is harmed.
SYMBIOSIS +-
PARASITISM
One species benefits from the
relationship and the other is harmed.
The wasp eggs gain a home before they are hatched and nourishment after they are hatched. The caterpillar dies as a result of this relationship.
The mosquito gains nourishment while the human looses blood and is susceptible to disease.
The hook worm gains nourishment in the intestines while the human is being harmed.

10. Biosphere
Bio = Life
A = without
Biotic
Abiotic