Ecology

Question 1

Abiotic Factor

Answer 1

a non-living thing in the environment (wind, sunlight, water)

Question 2

Biotic Factor

Answer 2

a living thing in the environment (tree, bird, bacteria)

Question 3

Secondary Succession

Answer 3

when an ecosystem is destroyed by a natural disaster but the soil remains in tact

Question 4

Greenhouse Effect

Answer 4

a layer of gases surround the Earth that allows life occur on Earth

Question 5

Parasitism

Answer 5

a relationship in which one organism benefits (parasite) and the other is harmed (host)

Question 6

Density Dependent Factor

Answer 6

factors that affect large populations (crowding, competition, predation, disease)

Question 7

Carbon Cycle

Answer 7

the movement of carbon through the ecosystem

Question 8

Invasive Species

Answer 8

an organism that is not native to an ecosystem and does not have any native predators (usually bad for the ecosystem)

Question 9

Commensalism

Answer 9

a relationship where one organism benefits but the other is not affected

Question 10

Density Independent Factor

Answer 10

factors that affect the population regardless of the population size (natural disaster, temperature change)

Question 11

Primary Succession

Answer 11

when rock is converted into sediment over a long period of time to create an ecosystem

Question 12

Mutualism

Answer 12

a relationship between organisms in which they both benefit from the relationship

Question 13

Ecology

Answer 13

the study of relationships between organisms

Question 14

A population of foxes live in the woods. Their population is reaching the carrying capacity of the ecosystem. What type of limiting factor affects large populations?

Answer 14

density dependent

Question 15

A symbiotic relationship means

Answer 15

one or both parties benefit

Question 16

Which of the following is most likely a climax community?

Answer 16

forest land that has just been cleared out

Question 17

If human civilization had never started burning fossil fuels, would there be a greenhouse effect?

Answer 17

Yes, the greenhouse effect is caused by naturally occurring gases

Question 18

A small farming community in Texas covers 14 square kilometers. There are 420 individuals who live within the town limits. What is the population density of individuals in this community?

Answer 18

30

Question 19

An ecosystem has a stable population of white tailed deer. What is the most likely outcome if a new species of deer that competed for the same resources were introduced?

Answer 19

the producer population would decrease

Question 20

A farmer stips cultivating a large tract of farmland and abandons it. The natural changes taking place soon afterwards, such as the growth of wild grasses and weeds, can be considered

Answer 20

secondary succession because there is already soil present

Question 21

By what process is CO2 removed from the atmosphere?

Answer 21

photosynthesis

Question 22

A species of Great Blue Heron feeds on small fish in a freshwater ecosystem. What would be the most direct result of a sudden decrease in the Great Blue Heron population

Answer 22

the fish population would increase

Question 23

As industry continues to grow and new construction takes place, what will happen to the amount of carbon dioxide in the atmosphere over time?

Answer 23

increase

Question 24

Man-of-war fish cluster around the venomous tentacles of jellyfish to escape larger predators. The presence of the man-of-war fish does not harm or benefit the jellyfish. This type of relationship is

Answer 24

commensalism

Question 25

Which of the following most likely would be a part of the first community on a newly formed volcanic island?

Answer 25

lichens