bio final ch 52 – Flashcards

which level of ecological study focuses the most on abiotic factors?

which of the following investigations is an example of the study of an abiotic factor?

of the following, which is the most inclusive level of organization in nature?

a major type of ecosystem is called a

in most cases, the two major climatic factors affecting the distribution of organisms in terrestrial ecosystems are____?

what are the two major factors determining the distribution of terrestrial biomes?

which of these biomes is characterized by little rainfall?

which of these is the largest terrestrial biome on earth?

which biome is characterized by an extensive canopy that allows little light to penetrate to the ground and by the presence of epiphytes?

which biome is characterized by the presence of permafrost?

Which of the biomes—tundra, coniferous forest, temperate broadleaf forest, temperate grassland, savanna, chaparral, desert, tropical rainforest—require periodic fires to maintain their existence?

what climatic factor might explain this difference?

Based on the data in the figure above, which of the following statements are correct? I) Area 1 would be considered a desert because of its high average temperature. II) Area 1 has more average precipitation than Area 2. III) Area 2 would be considered a desert because of its low average precipitation. IV) Area 2 has a larger annual temperature variation.

Based on the data in the figure above, which of the following statements are correct? I) Area 1 has more average precipitation than Area 2. II) Area 1 has a higher average temperature than Area 2. III) Both areas have low variation in monthly precipitation. IV) Area 2 has a lower annual temperature variation compared to Area 1.

besides sunlight, which would be the next most important climatic factors for terrestrial plants?

which of the following statements best describes the interaction between fire and ecosystems?

fire suppression by humans____?

if global warming continues at its present rate, which biomes will likely take the place of the coniferous forest?

which climograph shows the climate for location 1?

which climograph shows the climate for location 2?

suppose that the number of bird species is determined mainly by the number of vertical strata found in the environment. If so, in which of the following biomes would you find the greatest number of bird species?

which of the following is an important feature of most terrestrial biomes?

In areas of permafrost, stands of black spruce are frequently observed in the landscape, while other tree species are noticeably absent. Often these stands are referred to as "drunken forests" because many of the black spruce are displaced from their normal vertical alignment. What is the most likely explanation for the unusual growth of these forests in this marginal habitat?

two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of____?

If carbon dioxide levels continue to increase and climate change continues over the next century, which of the following would best predict the directional migration of the North American ecosystems from the biomes shown in this climograph?

based on the data in the figure above, which of the following statements is true?

which of these is characteristic of the photic zone of a freshwater biome?

the benthic zone of aquatic environments is defined as the____

the____biome is the largest of earth's biomes

an____is a region where fresh water and salt water mix

in deep water, which of the following abiotic factors would most limit productivity?

wetlands are standing bodies of freshwater, just like lakes and ponds. However, wetlands are different from lakes and ponds because wetlands have____

which of the following statements regarding turnover in a lake is correct?

which of the following types of organisms is likely to have the widest geographic distribution?

which of the following can be said about light in aquatic environments?

turnover of water in temperate lakes during the spring and fall is made possible by which of the following?

Imagine that a deep temperate zone lake did not turn over during the spring and fall seasons. Based on the physical and biological properties of limnetic ecosystems, what would be the difference from normal seasonal turnover?

if you are interested in observing a relatively simple community structure in a clear water lake, you would do well to choose diving into____

If a meteor impact or volcanic eruption injected a lot of dust into the atmosphere and reduced the sunlight reaching Earth's surface by 70 percent for one year, which of the following marine communities most likely would be least affected?

The oceans affect the biosphere by _____. I) producing a substantial amount of the biosphere's oxygen II) adding carbon dioxide to the atmosphere III) being the source of most of Earth's rainfall IV) regulating the pH of freshwater biomes and terrestrial groundwater

which of the following is responsible for the differences in summer and winter temperature stratification of deep temperate zone lakes?

A certain species of pine tree survives only in scattered locations at elevations above 2800 meters in the western United States. To understand why this tree grows only in these specific places, an ecologist should _____.

which of the following statements best describes the effect of climate on biome distribution?

in the development of terrestrial biomes, which factor is most dependent on all the others?

studying species transplants is a way that ecologists____.

which of the following is characteristic of most terrestrial biomes?

which of the following is true with respect to oligotrophic lakes and eutrophic lakes?

which lake zone would be absent in a very shallow lake?

the oceans affect the biosphere in all of the following ways except

when climbing a mountain, we can observe transitions in biological communities that are analogous to the changes

suppose that the number of bird species is determined mainly by the number of vertical strata found in the environment. If so, in which of the following biomes would you find the greatest number of bird species

In ecological terms, disturbance is an event such as a storm, fire, or human activity that changes a community, removing organisms and altering resource availability. Which of the following statements about the effects of disturbance is correct?