GC101 Exam 2 Review

What is the difference in the adaptation of a sled dog's (such as a Husky) thick coat of hair to help it withstand the cold temperatures of Arctic winters and a dog that adapts to cold temperatures in the fall by growing a thickened coat? The adaptation of the sled dog best describes adaptation at the ____________ level while the dog exposed to seasonal colder temperatures has _____________.

Evolution occurs as a result of

Which of the following is a physiological modification used to adapt to environmental conditions?

Natural selection will ultimately make a species

Regular lawn mowing selects for short-headed rather than tall-headed dandelions because

Tolerance limits are _______ that limit a species' survival.

A species can withstand a wide range of pH as an adult but the juveniles can only withstand a narrow range of pH. The abiotic factor, pH, would best be described as a

Which of the following fish species would be the best indicator of clean, well-oxygenated water?

Populations are most critically limited by

Indicator species, such as lichens, generally have a ___________ tolerance range for a ___________.

Use the following example: A species can withstand a narrow range of temperature. Above 100F there are no species present. In the range from 97F to 100F and 90F to 94F there are a few species present. Below 90F there are no species present. What would you label the range of temperature from 90F to 94F for this particular species?

What would you label the range of temperature from 95F to 96F for this particular species in the scenario?

A generalist is a species that

Certain night-active moths and day-active birds are specialized nectar feeders. How do these species coexist if they are using the same resource for food?

Humans can best be described as

Most organisms' niches are controlled by

Resource partitioning leads species to

Intraspecific competition is competition among ________ for resources.

Resource partitioning tends to lead to a high degree of _______ in species.

Which of the following is not a common strategy for successful interspecific competition?

An especially effective strategy for reducing intraspecific competition is

Symbiosis means

In the partnership of a lichen, the fungus provides _________ and the relationship is best described as _______.

A viceroy butterfly that closely resembles the bad tasting monarch is an example of __________ and the example of beetles that look like stinging wasps is an example of __________.

A keystone species is a species whose presence

In a commensal relationship,

A biological community's productivity is a measure of

"Abundance" describes the total number of _________ while "diversity" describes the number of _________.

In a biological community where diversity is great, such as a tropical rainforest, the abundance of any one species is likely to be

As a rule, near the Earth's north and south poles,

Complexity in an ecological community has to do with the number of

A community with hundreds of different types of primary producers, a few herbivores and only one carnivore, has

A community that changes very little over time is said to have great

In the coastal forest of Oregon an area was clear-cut for logging. Trees at the edge of the clearing and 200 meters into the forest died within a few months after the logging began. What is the best explanation for the death of the trees?

A "closed community" has a

A climax community is one that

Primary succession occurs when a community develops ____________ while secondary succession occurs when one ________.

As ecological development proceeds, a biological community

The most common reason that introduced species cause trouble is because they

Which of the following migrations is likely to cause the extinction of a native species?

A biome is described by

Location of specific biomes can be predicted based on

Cloud forests are found in ________ areas in tropical regions.

Neo finds himself sweating in a moist forest but there aren't many streams or wetlands. He is amazed by the tremendous amount of biodiversity including an abundance of biting mosquitoes. Has he inadvertently gotten closer to his goal of finding a boreal forest?

A biome absent from North America is the

Which of the following is an example of a specialization that plants in the desert may have?

Humid tropical forests have extraordinary biological diversity

Tropical seasonal forests are specially adapted to tolerate

You are in an area that is relatively hot. You bend down and notice that there are tracks in the soil that are very old. Since you know that this area is easily destroyed by human activity and the harsh climate slows recovery from human damage you conclude that this biome is

Morpheus, Trinity and Neo are on the wet western coast of North America and as they look around they see lots of mosses, lichens and ferns covering the tree branches. Condensation from fog on the leaves is a major form of precipitation. Where are they?