2nd test

Question 1

competitive exclusion

Answer 1

Two different species cannot use the same resource at the same time which leads to

Question 2

Resource partitioning

Answer 2

sharing of resources at different times in different ways (temporal, spatial, morphological)

Question 3

habitat corridors

Answer 3

paths where two populations meet. Usually, these areas are the spaces on rivers and roads and areas that allow organisms to cross

Question 4

metapopulations

Answer 4

populations made up of the same species

Question 5

inbreeding

Answer 5

breeding of closely related animals

Question 6

Density Dependent Factors

Answer 6

biotic factors (disease, food animals)

Question 7

Density Independent Factors

Answer 7

abiotic factors (weather)

Question 8

K-selected species

Answer 8

large body size, long life expectancy, production of fewer offspring, longer gestation period, longer to mature (hover close to carrying capacity)

Question 9

r-selected species

Answer 9

rapid development, high reproductive rate, small body size, early reproductive age, short lifespan (exponential growth, j-shaped graph)

Question 10

primary succession

Answer 10

the beginning step of ecological succession after an extreme disturbance Begins with bare rock and then undergoes physical weathering, allow

Question 11

secondary succession

Answer 11

Begins with soil and when an ecosystem reestablishes itself. It happens after natural disasters like fires flood earthquakes and can happen anthropologically like clearing a forest

Question 12

Species richness

Answer 12

biodiversity; amount of species in an area

Question 13

the equation for percent change

Answer 13

(new- OG/original) x 100 = % Change

Question 14

Population Growth Rate

Answer 14

Number of organisms born (rate of reproduction) – the deaths

Question 15

Intrinsic Growth Rate

Answer 15

Growth rate under perfect/ideal conditions (All resources available, no natural disasters, absence of disease and predators)
Produces j graph

Question 16

Logistical Growth Rate

Answer 16

the actual/realistic growth starts off as s-shaped then plateau as organism reach their carrying capacity (starts exponentially)

Question 17

keystone species

Answer 17

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Question 18

island biography rule

Answer 18

islands closer to the mainland, and larger in size have more biodiversity

Question 19

Genetic drift

Answer 19

random mixing of genes, reproducing with members of other populations, leads to biodiversity (good) (absence of recessive traits)

Question 20

Bottleneck Effect

Answer 20

happens when many members of a species or population are eliminated (anthropogenic or natural), the survivors then have a reduced gene pool

Question 21

Founder Effect

Answer 21

a new population is established by a small group from a larger population, and the gene pool is reduced

Question 22

niche generalist

Answer 22

can eat many different foods and live in multiple niches (raccoon)

Question 23

Niche specialist

Answer 23

narrower diet and area of living (Koala)

Question 24

population density

Answer 24

number of organisms in an area

Question 25

population

Answer 25

all the organisms that are the same species in the same place

Question 26

community

Answer 26

all the populations in the same area and time

Question 27

ecosystem

Answer 27

the reactions between the biotic and abiotic facts in an area

Question 28

population distribution

Answer 28

the pattern of where different species live (clumped, uniform, random)

Question 29

clumped distribution

Answer 29

move in herds of herd-like groups

Question 30

random distribution

Answer 30

prominently plants

Question 31

Uniform distribution

Answer 31

Often territorial animals

Question 32

Boom and boost cycles

Answer 32

overshoot and die off