which of the following are density independent factors?

Both density-dependent and density-independent factors can limit population growth. which of the following are density-independent factores?
mark all that apply.
a.limited food supply
b.temperature
c.flood
d.fire
e.weather changes

Which of the following is NOT a factor involved in the theory of evolution?

A. There is much variation in the characteristics of organisms making up a population.
B. Some traits are more adaptive than others
C. Population sizes of organisms tend to remain relatively stable through time.
D. Food supplies keep pace with the growth of populations feeding upon them.
E. Organisms reproduce beyond the limits of the environment that supports them.

which of the following is not a factor involved in the theory of evolution?

A. food supplies keep pace with the growth of the populations feeding upon them,

B.all organisms reproduce beyond the limits of the environment that supports them,

C.there is much variation in the characteristics of organisms making up a population,

D. some traits are more adaptive than others,

E.populations of organisms tend to remain relatively stable through time.

Which of the following was NOT a factor involved in the theory of Evolution?

a.some traits are more adaptive than others
b.population sizes of organisms tend to remain relatively stable through time
c.organisms reproduce beyond the limits of the environment that supports them
d.food supplies keep pace with the growth of the populations feeding upon them
e.there is much variation in the characteristics of organisms making up a population

Bio AP: ecology unit Chapter 52?

1. the age structure of a population influences population growth because
a. younger females have more offspring than older females
b. populations with shorter generation times grow more rapidly
c. different age groups have different reproductive capabilities
d. life tables show that mortality rates change with age
e. the more individuals that are immature, the slower the population will grow

2. A type III survivorship curve would be more likely to be found in
a. a semelparous species that produces many offspring
b. a K-selected population
c. a species that undergoes periodic molting
d. a species that is territorial
e. a population that is regulated by density-dependent factors

3. density-independent factors
a. tend to maintain a population around the carrying capacity
b. are involved in the population cycles seen in some mammals
c. are important in the regulation of K-selected populations
d. include climatic events and habitat disruptions
e. affect a higher proportion of a small population

4. which of the following is not a characteristic of a K-selected population?
a. usually one reproductive episode per lifetime with little parental care
b. extensive homeostatic capability to deal with environmental fluctuations
c. long maturation time
d. usually low mortality
e. large offspring or eggs

5. which of the following is not true? A population with a large r max value
a. probably has a short generation time
b. probably produces a large number of offspring per reproductive episode
c. is most likely found in variable environments
d. is most likely to be regulated by density-independent factors
e. is most likely to have a large body size

6. as a population approaches its carrying capacity in a particular environment, which of the following would be expected to occur?
a. N moves toward and becomes 0
b. r becomes negative
c. birthrate decreases and death rate increases
d. births cease and zero population growth is achieved
e. exponential growth begins to slow

7. which of the following would not be a density-dependent factor limiting a population‘s growth?
a. switching behavior of a predator
b. a limited number of available nesting sites
c. a stress syndrome that alters hormone levels
d. a very early fall frost
e. intraspecific competition

can some one please help me out ?

When prey populations are reduced, some predators may switch to an alternate food source.

True
False

The population size that can be maintained over the long term is called the:

A. carrying capacity
B. limit level
C. niche
D. population density

Human activity can affect the population size of another species through:

A. pollution
B. introduction of new species
C. over-hunting
D. all of the above

What is the name for a group of individuals of the same species living in the same geographic area?

A. Community
B. Ecosystem
C. Population
D. Niche

In which biological interaction does the presence of one species inhibit the growth of another while being itself unaffected?

A. amensalism
B. commensalism
C. mutualism
D. predation
___ happens when organisms vie for the same resources such as food, living space or mates.

A. Isolation
B. Speciation
C. Succession
D. Competition

___ happens when one organism feeds upon another.

A. Predation
B. Speciation
C. Succession
D. Competition

What is the study of factors that affect growth, stability, and decline of populations?

A. Age structure
B. Carrying capacity
C. Population control
D. Population dynamics
At the time that a population‘s growth curve begins to rise dramatically, that population is demonstrating its ___ potential.

A. exponential
B. biotic
C. carrying
D. limiting factor
All species populations are uniformly distributed across their ranges.

True
False

Which of the following population growth curves would be expected when a limiting factor is present?

A. bell curve
B. J-shaped curve
C. K-shaped curve
D. S-shaped curve

An organism’s energy, nutrient and survival requirements are aspects of its:

A. habitat
B. population
C. ecosystem
D. niche

The loss of one population can cause the extinction of another population that depends on the first population for food. This is an example of:

A. local extinction
B. population extinction
C. residual extinction
D. secondary extinction

The smallest population size that can avoid extinction is called:

A. carrying capacity
B. extinction point
C. local extinction
D. minimum viable population