Exam 52: Community Ecology

Figure 52.11 -According to Figure 52.11, a species has the highest chance of extinction when

Figure 52.9 -In the figure above, which community has the highest species diversity?

Some birds follow moving swarms of army ants in the tropics. As the ants march along the forest floor hunting insects and small vertebrates, birds follow and pick off any insects or small vertebrates that fly or jump out of the way of the ants. This is an example of what kind of species interaction?

Figure 52.1 -In looking at the figure above, what conclusions can be drawn?

Figure 52.6 -Treehoppers a type of insect) produce honeydew, which ants use for food. Treehoppers have a major predator, the jumping spider. Researchers hypothesized that the ants would protect the treehoppers from the spiders. In an experiment, researchers followed study plots with ants removed from the system and compared them to a control plot. In the figure above, what can you conclude?

Figure 52.5 -In the figure above, the labelled groups, which group is displaying Batesian mimicry?

A measure of how much a community is affected by a disturbance is termed

What is the main difference between asymmetric competition and symmetric competition?

Figure 52.5 -In the figure above, which of the following statements is true?

In the hypothesis that C. stellatus a species of barnacle) is competitively excluded from the lower intertidal zone by B. balanoides another species of barnacle), what could be concluded about the two species?

During a one year study, researchers found no difference in treehopper populations in any of their control and experimental groups. What could they measure during the second year to gain information about why this might have occurred?

Figure 52.3 -In the figure above, which species is the stronger competitor?

Figure 52.10 -In figure above, what can be stated about species diversity and latitude?

The competitive exclusion principle states that

Which one of the following animals would most likely be defined as a keystone species?

Which are the only two interaction types to depend on density and effective defence to determine the short- term impact?

Which hypothesis supports the observation that herbivores do not generally eat all of the available plants?

Figure 52.9 -In the figure above, which community has the highest species richness?

Figure 52.2 -What is the term used to describe the process shown in the panels in the figure above?

While traveling in Texas, you stumble across a snake with red, yellow, and black bands. You somehow remember that this could be a poisonous coral snake or a harmless milk snake, but you forget how to differentiate them because they both have similar colours and banding patterns. You wisely decide not to pick up the snake. What defence was successful in preventing you from grabbing the snake?