AP Biology Unit 7 & 8 Review

What is the most common dispersion/spacing pattern in ecosystems?

Name the type of evidence: Using remains of prehistoric animals

A group of interbreeding individuals whose offspring can have viable offspring.

What is the main difference between primary and secondary succession?

Which is NOT an explanation why most of the energy in an ecosystem lost between trophic levels?

Which of the following graphs corresponds with exponential growth of a population?

Post zygotic isolation in which the offspring are viable, but they are sterile, like a mule.

The species that contributes the most biomass to the community is called the

Humans who live in developed countries would be described by which survivorship curve?

New species form when they are geographically separated.

Carnivores are examples of:

Which of the following graphs corresponds with logistic growth?

Traits that improve survival or reproduction accumulate in a population. Adaptive Change.

Which of the following is an example of a density-independent factor?

Why are there typically a small number of trophic levels in an ecosystem?

What is the single greatest threat to biodiversity?

Which of the following is considered an abiotic factor?

Type of selection that occurs when extreme phenotypes are eliminated, intermediate is favored.

A type of genetic drift in which organisms may wiped out by a natural disaster, drastically limiting the gene pool

Speciation occurs even though two groups live in the same area

Reproductive isolation in which morphological differences (such as size) prevent breeding

Which would NOT be an effect of introducing new individuals into a small declining population?

What is the carrying capacity of this deer population?

Density-dependent factors have increasingly greater effect as a population's density increases.

The amount of energy a consumer converts to their own new biomass is called

Reproductive isolation occurs due to different habitats so individuals rarely meet each other.

A type of genetic drift in which there is a limited gene pool because a species has just moved in to an area.

Evolutionarily speaking, why is immigration important?

The percentage of energy transferred from one trophic level to the next is called

Humans can modify the nitrogen cycle to cause

Frequency in traits are due to random chance. Random change.

If a population is steadily increasing, there are ______ resources.

300 kg of grass can support how many kg of a secondary consumer's production?

Which of the following is a density-independent factor?

Determines frequencies of alleles in a population. Can tell us if a population is evolving or not.

A species dividing a niche to avoid competition is called

Which is true as population size (N) approaches K (carrying capacity) in the logistic equation?

Which of the following is NOT an effect of habitat loss on plants?

The species required to maintain the biodiversity of a community is called the

What type of strucure?

What type of structure?

Reproductive isolation in which individuals breed different times of the day or different times of the year.

rapid change separated by periods of little or no change

Which is a characteristic of exponential population growth?

A very rich community would have _______ different species.

Which curve best describes a species whose individuals are likely to die before adulthood? :(

Levels of organization, from LEAST to MOST inclusive:

Birth rate = 0.07 & death rate = 0.04; calculate population size change in a population of 1000

The endosymbiont theory proposes that...

Which of the following is an example of a density-dependent factor?

What evidence does NOT support the Endosymbiont Theory?

What type of structure?

The number of organisms of a species per unit area is called

Beginning a new community, starting from bare rock is an example of:

Two species cannot occupy the same ______ (for very long).

Typically, which trophic level has the greatest total biomass in the ecosystem?

After a disturbance in an existing community occurs, the rebuilding of a new community is:

Which of the following is a biotic factor?

Type of selection that occurs when an extreme phenotype is favored.

When humans selectively breed for traits that they find desirable.

A branching diagram that shows relationships between organisms

Which animal is able to convert producer biomass in the most efficient way?

The maximum population size that an environment can handle is called

Why do invasive/non-native species typically out-compete the native species?

Reproductive Isolation in which individuals have unique mating calls, displays, habits, etc.