Unit 9 Test

Question 1

Biosphere

Answer 1

Portion of earth that sustains life

Question 2

Limiting factor

Answer 2

Abiotic or biotic factor that’s limits the reproduction of organisms

Question 3

Tolerance

Answer 3

Ability of an organism to survive

Question 4

Levels of organization - simplest to complex

Answer 4

Organism
Population
Community
Ecosystem
Biome
Biosphere

Question 5

Biological community

Answer 5

All biotic factors in an area

Question 6

Ecosystem

Answer 6

Biotic and Abiotic factors in an area

Question 7

Biosphere

Answer 7

Earth

Question 8

Habitat

Answer 8

Area where an organism lives

Question 9

Niche

Answer 9

Role organism has in an environment (no 2 organisms share the same niche)

Question 10

Symbiosis

Answer 10

Close relationship that exists when 2 or more species live together

Question 11

Detrivore

Answer 11

Eats leftover food

Question 12

What percent of energy is available to the next trophic level

Answer 12

10%

Question 13

Producers have what percent of energy avaliable to them?

Answer 13

100%

Question 14

R strategy

Answer 14

Produce as many offspring as possible in a short amount of time to take advantage of an environmental factor

Question 15

K strategy

Answer 15

Produce few offspring that are more likely to survive due to parental care

Question 16

Primary succession

Answer 16

Starts on an area of rock. Lichens and mosses break down rock into soil

Question 17

Pioneer species

Answer 17

Mosses and lichen

Question 18

Climax community

Answer 18

When there is little chance in species composition in a community

Question 19

Secondary succession

Answer 19

Change that takes place after a community has beeb removed. Soil remains

Question 20

Each level in the food chain contains less energy than the one below it because some energy is ________

Answer 20

Lost as heat

Question 21

Exponential growth occurs when

Answer 21

There are an unlimited amount of resources available

Question 22

Logistic growth occurs when

Answer 22

There is a limiting factor on a population