Ecology

What is the relationship between a tapeworm and a dog?

What type of relationship best describes lichens?

What type of relationship is formed between mycorrhizal fungi and plant roots?

What could result from an overlap in the niches of two closely related species?

Which type of relationship is characterized by benefiting one organism and producing no harm or advantage to the other?

What word best represents ritualized contests that determine which competitor gains access to food or mates?

Which type of biome is characterized by rapid recycling of nutrients?

Which biome has the least amount of moisture?

What biome is characterized by permafrost?

What biome consists of mainly grassland with a few trees?

What biome is characterized with having high levels of light on the forest floor in early spring?

What biome has distinct rainy and dry seasons?

What biome is characterized by evergreens?

What process is performed by bacteria that live in the nodules of legume plants?

What process converts atmospheric nitrogen into ammonia?

What is the name of the process that returns gaseous nitrogen back into the atmosphere?

What process results in urea, uric acid and ammonia being deposited into the soil?

What process is characterized by plants taking up ammonium and nitrates to build amino acids and nitrogenous bases?

What is the process in which nitrogen-containing organic molecules are broken down, and NH3 is released?

In which of the following organisms would one expect to find the greatest concentration of mercury (a harmful metal pollutant)?

All of the following are true statements about the biomass pyramid EXCEPT

A fast-moving stream is most likely to

All of the following represent mutualistic associations in ecosystems EXCEPT

A species of ant protects an acacia tree from a specific predator. The acacia tree has specialized storage areas in which these ants live. This is an example of

Which of the following organisms can feed at more than one trophic level?

Which of the following are correctly paired?

A farmer is concerned about the poor yields of her indoor crops. Possible remedies include all of the following EXCEPT

Which of the following is TRUE regarding the flow of energy and nutrients in an ecosystem?

Mt. Saint Helens, a North American volcano, erupted in May 1980. The eruption wiped out everything within a 200-square-mile radius of the volcano. Today, small trees, grasses, shrubs, and several animals including secondary consumers inhabit the area. Which of the following est explains this situation?

Which of the following illustrates a biotic aspect of an ecosystem?

An ecologist studying how the invasive kudzu plant affects the population dynamics of native plants is focusing on the

All of the following are characterisitics of an ideal pioneer species EXCEPT

Which of the following sea creatures might be described as a pelagic animal of the aphotic zone?

Ted was a passenger on a plane that took off from New York, flew over temperate deciduous forest, then grassland and desert, then arrived at an airport in chaparral. Ted was flying

The primary ecological factor determining the distribution of deserts on the planet is

Heliconius butterflies live on passionflower vines. Females of some Heliconius species avoid laying their bright yellow eggs on leaves where other yellow egg clusters have been laid. Some species of passionflowers develop large, yellow nectaries that resemble Heliconius eggs. Which of the following terms most acuratel explains the relationship between the Heliconius butterfly and the passionflower vine?

All of the following statements concerning the relationship between angiosperms and their insect pollinators are true EXCEPT

The orange and black monarch butterfly feeds on the milkweed plant, which contains a cardiac glycoside that is poisonous to birds. The viceroy butterfly has the same wing coloration as the monarch but does not feed on the milkweed plant. Animals avoid eating both kinds of butterflies. The coloration on the viceroy is an example of