Population ecology (2.2) - Parts 1-2

Question 1

This term refers to the number of organisms in a given area.

Answer 1

Density

Question 2

This term refers to the pattern of organisms within a given area.

Answer 2

Dispersion

Question 3

This pattern results from a need for nutrients, water, or some other important items.

Answer 3

Clumped

Question 4

This pattern results from territoriality or favorable environment.
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Answer 4

Uniform

Question 5

There is no apparent reason or pattern.

Answer 5

Random

Question 6

What is the study of population sizes and distribution?

Answer 6

Demography

Question 7

The Population growth in number by birth or immigration (going into an area).

Answer 7

Growth

Question 8

The Populations decrease in number by death or emigration (leaving an area).

Answer 8

Decline

Question 9

How do you calculate percentage population change?

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Answer 9

Percent change = change in population X 100 %
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Total population size

Question 10

What are resources?

Answer 10

Food, water, space, jobs, etc.

Question 11

What happens when resources become scarce? competition rises and population numbers decrease.

Answer 11

Competition rises and population numbers decrease.

Question 12

​Health Conditions

Answer 12

Crowding and disease.

Question 13

organism killed and eaten by another organism

Answer 13

Prey

Question 14

Organism that eats all or part of another organism after killing it.

Answer 14

Predator

Question 15

This term refers to the largest population that an environment can support at any given time.

Answer 15

Carrying Capacity

Question 16

This is a close, long-term association between two or more species.

Answer 16

Symbiosis

Question 17

Name all the types of symbiosis relationships.

Answer 17

Mutualism
Commensalism
Parasitism

Question 18

This is a relationship between two or more species in which both species benefit (+, +)

Answer 18

Mutualism

Question 19

What is a butterfly and a Dandelion flower an example of?

Answer 19

Mutualism

Question 20

This is a relationship between two species where one species benefit and the other is unaffected (+,0).

Answer 20

Commensalism

Question 21

What are sharks and remoras an example of?

Answer 21

Commensalism

Question 22

This is a relationship between two species in which one species, the parasite, benefits and the other species, the host, is harmed. (+, -)

Answer 22

Parasitism

Question 23

What is deer and deer ticks an example of?

Answer 23

Parasitism

Question 24

The evolution of two species that is due to mutual influence, often in way that makes the relationship more beneficial to both species.

Answer 24

Coevolution

Question 25

What are flowers and their pollinators (bees, moths, and birds) an example of?

Answer 25

Coevolution

Question 26

This is the same species, at the same time, in the same place, and reproducing.

Answer 26

Population