Bio Exam 1

Which of the following is an example of discovery science?

Which of the following is an example of hypothesis-driven science?

Which of the following lists the steps of the scientific method in their proper order?

A(n) _____________ is a testable explanation for an observation.

Screech owls eat blind snakes. But sometimes, a screech owl will bring a live, blind snake back to its nest. There the snake eats mites, larvae, and other pests that infest the nest. The presence of a blind snake improves the survival of young chicks. This story is an example of both predation and mutualism.

There are little birds that spend a great deal of time on the back of a rhinoceros and eat the blood sucking ticks out of the rhino's ears. Answer the following question regarding these creatures' relationships. The bird-rhino relationship is an example of ________.

There are little birds that spend a great deal of time on the back of a rhinoceros and eat the blood sucking ticks out of the rhino's ears. Answer the following question regarding these creatures' relationships. The bird-tick relationship is an example of ________.

There are little birds that spend a great deal of time on the back of a rhinoceros and eat the blood sucking ticks out of the rhino's ears. Answer the following question regarding these creatures' relationships. The tick-rhino relationship is an example of ________.

Which theorem states that no two species competing for the exact same resources can coexist?

Before it was banned in the United States in 1972, the pesticide DDT was used to treat wetlands where mosquitos breed. There, algae would accumulate DDT in their tissues. Small aquatic animals such as mayfly nymphs would eat the algae. Fish would eat the mayfly nymphs and osprey would eat the fish. Which tropic level would have the highest DDT levels?

The tendency of toxins to accumulate in top predators is called biological ________.

Robert Paine studied sea stars in the intertidal zone along the northern Pacific coast. When he removed sea stars from a study area, their prey, two mussel species, increased exponentially. This crowded out other species, and the overall biodiversity of the community was greatly reduced. In this example, you would call the sea star a keystone species.

Species diversity is highest when ________.

What type of species, if removed from the community, could lead to the collapse of the entire community?

The buildup of soil on bare rock by the decomposition of early colonizers is characteristic of ________ succession.

The emerald ash borer is an invasive insect species that has killed millions of ash trees since it was first identified as a threat in 2002. The U.S. Forest Service has a management plan that includes extensive surveys to detect new infestations, quarantines of materials from already infested forests, public education, chemical treatments, investigation of possible parasites that might attack the ash borer, and an investigation of cultural practices that might help reduce the threat. This control method is an example of biological control.

The Asian kudzu bug (Megacopta cribaria) arrived in Atlanta in 2009 and is quickly spreading across the South. In addition to eating kudzu, it also eats soybeans and can decimate entire crops. The kudzu bug is a type of ________ species.

The use of multiple forms of pest control including biological, chemical, and the planting of pest-resistant crops is a strategy commonly called ________.

Already, about 20% of Earth's coral reefs have been destroyed. Human activities are threatening __________% of the remaining coral reefs.

At what level is biodiversity often studied and measured?

While there are many varieties of banana, only the Cavendish is suitable for mass production and worldwide trade. It is currently being decimated by a soil fungus in Asia. If the banana fungus should reach the Americas before a treatment is discovered, it could spell the end of bananas in North American supermarkets. If that were to happen, how would the extinction of the Cavendish banana be categorized?