| Question |
Answer |
| Biological factors in an organism's ecosystem that the organism interacts with are called ___. |
biotic factors |
| Physical factors in an environment that affect the ecosystem are called ____ factors |
abiotic |
| List 4 common abiotic factors |
sunlight, precipitation, wind, temperature |
| An area where an organism lives is called its |
habitat |
| The role that an organism fills in an ecosystem is called its ___. |
niche |
| Any necessity for life (light, water, shelter) that an ecosystem supplies is called a ___ |
resource |
| The rule that states that no two organisms can fill the same niche is called the |
competitive exclusion principle |
| When one organism eats another organism, the act is called ___. |
predation |
| A relationship where 2 organisms live closely together is called ___. |
symbiosis |
| When two organisms live in symbiosis, and both benefit from the relationship, then it is called |
mutualism |
| When two organisms live in symbiosis and one benefits while the other is neither helped or harmed, the relationship is called |
commensualism |
| When two organisms live in symbiosys and one organism lives on or in the host organism, causing harm, then the relationship is called |
parasitism |
| When a bee pollinates a flower as it collects nectar, then the relationship is ___. |
mutualism |
| Egrets are birds that follow cattle as they walk through tall grass. The egrets eat the insects stirred up by the passing cattle. Name the relationship |
commensualism, the bird benefits, the cattle unaffected |
| Clownfishes spend time near sea anemone. Clownfish predators cannot approach the fish because the anemonae has stinging cells on its arms that the Clownfish is immune to. The anemone is unaffected by the clownfish. Name the relationship |
Commensualism, one benefits while the other is unaffected |
| Barnicles are crustaceans that grow in the ocean. They grow on whales and clams in the oceans- but the whales and clams are not affected. Name the relationship |
Commensualism |
| Ants care for and feed small insects called aphids. The aphids secrete a sweet liquid that the ants eat. Name the relationship. |
Mutualism |
| Cowbirds lay their eggs in the nest of other birds. The cowbird young steal food from the resident brood- harming them. Name the relationship |
parasitism |
| Ticks embed their head into a host, sucking blood from the host. Name the relationship |
parasitism |
Russ Crick
on 2009-09-14
Ch.18 LTI-MA 509
