Cumulative Exam Answers

A lab investigation involves using food coloring to track diffusion. Which action should students take to avoid damaging their clothing?

Human impact on ecosystems would most likely lead to secondary succession over primary succession.

A balance in abiotic factors is vital to healthy ecosystems.

Herbivores typically have monocular vision to allow them a wider range of vision, which helps them elude predators. What type of adaptation is this?a.Behaviorb.Physiologicalc.Biochemicald.Ecological

Which of the following is true of deciduous forests?a.characterized by four seasonsb.trees maintain their leaves year roundc.precipitation is concentrated in one season d.averages 5-10 inches of precipitation annually

Organisms that live in the savanna and grassland biomes have developed unique adaptations that aid in their survival. Which of the following organisms is most likely to be found in a grassland? a. a bird that nests in trees b. an animal that burrows c. a large predatory cat d. an animal not adapted to cold temperatures Please select the best answer from the choices provided

All animals are _______.a.producersb.omnivoresc.herbivoresd.consumers

A scientist tracked the summer eating habits of brown bears. His results are shown in the graph below.If the brown bears’ reliance on leaves increased by 14 percent, how would the combined total of all the percentages be affected?

Which of the following is the adaptation that allows animals to survive in high altitudes, which contain lower levels of oxygen? a. migration b. higher levels of hemoglobin c. insulating feathers d. higher body temperatures Please select the best answer from the choices provided

Which of the following statements about succession is not true?a.Succession is the cause of ecosystem destruction.b.Succession is a process that allows communities to recover from disruptive events.c.The process of succession is necessary to maintain and establish stable communities.d.Succession can follow both human and natural events.

While traveling across the Atlantic, a scientist encountered an unfamiliar lizard. He used a classification tool that relied on observable features to determine its species. Once he knew the species, he could learn more about the type of environment the lizard was adapted to.Which best describes the purpose of identifying the lizard?

Fish do not live in the icy rivers of the tundra.

A plant native to the chaparral would be expected to _______.a.require frequent rainfallb.tolerate nutrient-poor soilc.have large, soft leavesd.be tall with large branches

Which of the following statements about the tundra is not true?a.Tundra means “treeless land.”b.Plants and animals in the tundra have adapted to the extreme climate.c.Temperatures in the tundra range from extreme highs to extreme lows.d.The alpine tundra can be found on mountaintops.

The introduction of Caulerpa, also known as killer algae, into California was ultimately the result of _______.a.hull foulingb.the aquarium trade in exotic, nonnative aquatic speciesc.intentional released.an algae farming company

Matter is moved through the Earth by the interaction of Earth’s systems.

Which of the following adaptations would you expect to find in an animal in the alpine biome, but not in the taiga?a.hibernationb.migrationc.large lungsd.large paws

Which of the following statements about biodiversity is true? a. Changes to biodiversity always positively affect an ecosystem. b. Changes to biodiversity always negatively affect an ecosystem. c. Changes to biodiversity can positively and negatively affect an ecosystem. d. Changes to biodiversity never affect an ecosystem. Please select the best answer from the choices provided

Cranberries and grapes may have therapeutic value. A cranberry company obtained the patent for a process to extract the oil from cranberry seeds. According to the patent, this oil can be used to treat breast cancer or to reduce its incidence. The oil can be used in drinks and foods. A grape juice company claims to have evidence that certain grapes have health benefits ranging from improving cardiovascular health to improving cognitive brain function in the elderly. These claims will be tested by the Food and Drug Administration (FDA) before the companies are allowed to market their products for “treating” ailments or “improving” health. Until then, the companies can describe that their products “help to maintain” or “support” health. Until studies support their claims, the companies cannot ascribe direct health benefits to their products.Why would the FDA perform tests when a cranberry company and a grape company have already conducted research on the same products?

How can an increase in biodiversity lead to an increase in ecosystem stability?a.A more biodiverse ecosystem is not subject to change.b.A more biodiverse ecosystem has a higher chance of adapting to species changes.c.A more biodiverse ecosystem has fewer species types to balance.d.A more biodiverse ecosystem is subject to fewer natural disasters.

Which two processes would most likely cause metamorphic rocks to change into sediments?

Which characteristic best distinguishes quantitative data from qualitative data?

What is the first way in which biology researchers present the results of their latest research?

What aspect of chaparral shrubs is both a part of their natural defenses and the reason many are popular in cooking?a.aromatic oilsb.small evergreen leavesc.ability to thrive in nutrient-poor soild.seed germination after fires

Why are cane toads in Australia considered an invasive species rather than simply nonnative?a.They are destructive to native species and have no natural predators.b.They reproduce more quickly than native species.c.They have venom glands.d.Large adult specimens are able to hunt snakes.

Omar studies the effects of a drought on the depth of water in a pond. He takes a reading of the water depth at the same location in the pond every day for the duration of the drought. Which method of displaying data would he most likely use to show changes in water depth?

Small aquatic organisms, such as coral, are the producers of the ocean.

What is the safest way to carry a microscope?

Which of the following is not one of the five zones of the deciduous forest?a.shrubb.animalc.herbd.tree stratum

Some theories are developed from repeated testing of a single hypothesis. Cell theory, germ theory, and the theory of evolution all have developed from the testing of multiple related hypotheses. Which statement best explains why some theories develop this way?

Two animals that can be found at the Grand Canyon include the Abert’s and Kaibab squirrels. The Abert’s squirrel is found at the south rim of the canyon and in a few surrounding states. The Kaibab squirrel, however, can only be found at the canyon’s north rim, mainly on the Kaibab Plateau. The Kaibab squirrel is not found anywhere else in the world. Scientists believe that the squirrels are actually closely related and have developed separately as a result of geographic isolation. It is possible that the squirrels were separated by plateau erosion that separated the forests and isolated the Kaibab population. Some scientists are studying if the squirrels are now two separate species or if the Kaibab squirrel is simply a subspecies of the Abert’s squirrel. Separate species are unable to reproduce with each other. Which evidence would be used to support the claim that the squirrels are two separate species?

What is one purpose for the peer-review process in scientific research?

An environmental scientist studies _______.a.the interactions of matterb.the anatomical structure of Earth’s life formsc.methods to preserve natural resourcesd.Earth’s weather patterns

The image shows an up-close view of a rock.

The following graph is representative of what type of population growth?a.logisticb.exponentialc.lineard.triangular

Desert plants are often widely spaced due to competition for rainwater.

Energy in most ecosystems must flow through autotrophs because ______.a.only autotrophs can convert solar energy into chemical energyb.autotrophs are simpler organisms than heterotrophsc.heterotrophs only generate a small fraction of their energy from photosynthesis.d.all of the above

A dichotomous key uses

Human impact on one system leads to changes in more of Earth’s systems.

Which is the correct order of processes that occur as water moves from a lake to a cloud and then back to Earth's surface?

Which of the following is not true regarding the cacao tree?a.It originated in the Amazon.b.The cacao tree produces fruit all year long. c.Cocoa is made from the whole cacao fruit.d.The cacao fruit has a mango flavor.

Which of the following adaptations is most likely not found in organisms of the savanna?a.burrowingb.grazingc.long legsd.thick fur

Walking among the top canopy in a tropical rainforest requires _______.a.bridges suspended almost 100 feet off the groundb.bridges suspended almost 60 feet off the groundc.bridges suspended almost 20 feet off the groundd.no special conditions

Organisms that live in freshwater and marine biomes have developed unique adaptations that aid in their survival. Which of the following adaptations does not help an animal move through the water? a. streamlined body b. thick layer of blubber c. flippers and flattened tails d. smooth, almost furless body Please select the best answer from the choices provided

The largest diversity of plants and animals on the planet is found in one terrestrial biome.

Which of the following would be expected to have the greatest impact on primary productivity?a.chemical energyb.nutrient availabilityc.solar energyd.water availability

Salt glands allow desert animals to reduce their water loss due to _______.a.respirationb.transpirationc.evaporationd.urination

A population’s size is unaffected by the available resource supply.

Which of the following groups of environmental science careers are most similar? a. Hydrologist, toxicologist, environmental lawyer b. Environmental physician, environmental veterinarian c. Environmental activist, oceanographer, ecologist d. Oceanographer, Environmental journalist Please select the best answer from the choices provided

Aristo was riding in a car and noticed a pond that was covered in algal blooms due to excess phosphorus in the water. Which of these other features in the landscape could be the reason for the high levels of phosphorus?