AP Environmental Science : Species Relationships and Diversity

Study concepts, example questions & explanations for AP Environmental Science

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Example Questions

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Example Question #11 : Species Relationships And Diversity

Which of the following terms describes the array of living organisms, their assemblages, their evolutionary and natural histories, as well as their interactions with each other?

Possible Answers:

Fragmentation

Bioaccumulation

Biomagnification

Biodiversity

Disturbance

Correct answer:

Biodiversity

Explanation:

The correct answer choice is biodiversity. Biodiversity is the area within biology focused on understanding biological diversity. The terms "disturbance" and "fragmentation" are natural processes that can have impacts on species, but they do not describe species. The terms "biomagnification" and "bioaccumulation" describe how nutrients and contaminants accumulate over time. 

Example Question #161 : Ap Environmental Sciences

Land managers are responsible for conserving biodiversity within areas of natural habitat. By monitoring specific species in the habitat, land managers can tell whether or not they have a healthy ecosystem. Which do we call species that gives us information about the health of an ecosystem?

Possible Answers:

Keystone species

Indicator species

None of these

Indigenous species

Invasive species

Correct answer:

Indicator species

Explanation:

The correct response is indicator species. If the indicator species is healthy, then it tells or indicates that the ecosystem as a whole is healthy. Indigenous species are native to a certain location, while invasive species are those that are not native to a location and their introduction usually causes harm to the existing ecosystem. A keystone species is one that plays a critical role in the overall health of an ecosystem.

Example Question #13 : Species Relationships And Diversity

Which form of signaling is very important in marine ecosystems both in intraspecies and interspecies communication and is used by many reef fishes in conjunction with other senses to recognize places and receive warnings.

Possible Answers:

Mechanical

Audatory

Behavioral

Olfactory

Correct answer:

Olfactory

Explanation:

Olfaction in fish and other marine life is very important. Smells are carried on currents and can be used to identify and find prey, recognize familiar territory, attract mates, and warn predators and/or competitors of defense mechanisms.

Example Question #14 : Species Relationships And Diversity

Of the following biomes, which contains the highest biodiversity?

Possible Answers:

Temperate Deciduous Forest

Desert

Temperate Grassland

Tropical Rainforest

Tundra

Correct answer:

Tropical Rainforest

Explanation:

Somewhere between 40% and 75% of all species are indigenous to rainforests, meaning that they are found nowhere else on earth. They contain half of the extant animal and plant species currently on earth, with a large majority of all flowering plants found there. Many of the world's natural medicines have been found in tropical rainforests, and with thousands of undiscovered species still lurking within them, it is likely that there are many more medicines waiting to be discovered.

Example Question #15 : Species Relationships And Diversity

Some species of barnacles live attached to the skin of whales. This allows them to travel vast distances through the ocean without ever actually moving, guaranteeing them a constantly changing supply of food. While this is tremendously beneficial for the barnacles, it doesn't really have any effect on the whales, which are large enough that the barnacles aren't even a minor annoyance. 

What kind of symbiosis does this describe?

Possible Answers:

Endosymbiosis

Mutualism

Predation

Commensalism

Parasatism

Correct answer:

Commensalism

Explanation:

In relationships based upon commensalism, one of the species benefits greatly, while the other is neither harmed nor helped. This is different from mutualism, where both species are benefited, and parasitism, where one species is benefited and the other is hindered. "Endosymbiosis" is the theory used to describe how mitochondria developed, and "predation" describes a situation where one organism feeds on another.

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