population changes

Question 1

Clumped dispersion

Answer 1

Individuals are concentrated

Question 2

Uniform dispersion

Answer 2

Equally spaced out

Question 3

Random dispersion

Answer 3

An unpredictable pattern

Question 4

4 factors that affect population change

Answer 4

1. Natality
2. mortality
3. immigration
4. emigration

Question 5

Open population

Answer 5

Allows things to enter and leave population

Question 6

Closed population

Answer 6

Does not let things enter or leave population

Question 7

Exponential growth

Answer 7

Size increase as a fixed rate per time

Question 8

Environmental resistance

Answer 8

Any factor limiting a populations ability to reach its biotic potential

Question 9

Gene flow

Answer 9

Transfer of genetic info from one population to another

Question 10

Density dependant factors

Answer 10

factor that influences a population due to density (disease, predation, food supply)

Question 11

Density independent factors

Answer 11

A factor that influences a population regardless of the population (fire,flood)

Question 12

Intra-specific competition

Answer 12

And interaction between the same species as they compete for resources

Question 13

Inter-specific competition

Answer 13

An interaction between different species as they compete for resources

Question 14

K selected strategy

Answer 14

• long life
• low birth rate
• low birth number
• nurture their young
• large animal

Question 15

R selected strategy

Answer 15

• short life
• high birth rate
• high birth numbers
• no nurturing
• small animals

Question 16

Mimicry

Answer 16

Organisms try to mimic another organism or object

Question 17

Camouflage

Answer 17

Organs try to blend into background or habitat

Question 18

Three types of symbiosis

Answer 18

• parasitism
• commensalism
• mutualism

Question 19

Parasitism

Answer 19

One benefits and the other is harmed

Question 20

Commensalism

Answer 20

One benefits and the other doesn’t care

Question 21

Mutualism

Answer 21

Both benefit

Question 22

Succession

Answer 22

Slow replacement of one community of plants by another

Question 23

Primary succession

Answer 23

Plants take over an area not previously covered by plants. It is slow due to the lack of nutrients (plants growing through pavement )

Question 24

Secondary succession

Answer 24

Plants take over an area that was previously covered by plants. It is faster due to availability of nutrients (forest fire)

Question 25

Pioneer community

Answer 25

These are the first plans to arrive during succession usually weeds

Question 26

Climax community

Answer 26

These are the last plans to arrive depending on the biome it’s happening in