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Chem semster test
| Question | Answer |
|---|---|
| Which of the following statements is not correct | Consumers get their energy directly from the Sun |
| What kind of organism obtains energy only from producers | Herbivores |
| If an insect eats a plant and a bird eats the insect, about how much from the plant is stored in the insect for the bird to use | 10% |
| Which gas makes up 78% of our atmosphere but can be used by plants only when transformed by bacteria first | Nitrogen |
| What kind of natural disaster helps some Forest communities by allowing some trees to release their seeds by clearing away Deadwood, and by encouraging new growth? | Fire |
| Where would an ecologist be least likely to go to study primary succession | The Amazon rainforest |
| Which of the following is not a true statement about cellular respiration | Sugar molecules are its primary products |
| Which of the following are photosynthetic organisms | Freshwater algae |
| Consumers are organisms that | Get solar or other energy indirectly |
| The energy consumed by organisms | Can be stored in fat and sugar molecules |
| Succession is possible because | New species make the environment less suitable for previous ones |
| Which of the following is an example of secondary succession | Growth of plant after a forest is destroyed by fire |
| Which organism is likely to be in the bottom trophic level of a food chain | Algae |
| What term is used to refer to the many feeding relationships that are possible in an ecosystem | Food web |
| What type of vegetation would you expect to find an abandoned farm that has remained undisturbed for a hundred fifty years | Tall mature oak trees |
| What type of succession occurs after a natural process such as a volcanic eruption or flood | Secondary succession |
| Tropical rainforest are threatened by | Deforestation and the trade of rainforest plants and animals |
| The distance north or south of the Equator, as measured in degrees, is called | Latitude |
| If you visited a savanna, you would likely see | Large herds of grazing animals, such as rhinos, gazelles, and giraffes |
| Deserts are | Often formed on the dry side of mountains |
| Biomes with higher temperatures and less precipitation tend to have | Shorter and less dense vegetation |
| Animal that live in the desert | Are usually nocturnal |
| Adaptation of desert animals that help them survive in the hot, dry desert often include | Searching for food at night |
| Adaptations demonstrated by plants in tropical rainforest include | All the Above |
| Which of the following is an adaptation of coniferous trees in the taiga | They have unique overall shape in order to accumulate snow, which acts the heavy is leading layer |
| The tundra | Has a layer of soil that is permanently Frozen beneath the topsoil |
| Which of the following best describes a tropical rainforest | Species of animals with specialized ways of surviving in order to avoid competition |
| The main factor that determines what type of plants grow in a biome is | Both temperature and precipitation |
| Taiga is | Forest biome dominated by coniferous trees, such as Pine, Fir, and Spruce |
| Biomes | Are usually described by their vegetation |
| Grasslands, such as prairies of a North America, | Are threatened by soil erosion because native grasses have been damaged or destroyed by plowing and overgrazing |
| Estuaries | Are ecosystems where both freshwater and saltwater are present |
| Which of the following is not characteristic of salt marshes and mangrove swamps | Both are dominated by Marsh grasses |
| In the _____ zone, the water is cool and dark. | Benthic |
| What mainly distinguishes nekton from benthos | One swims freely and the other often live attached to a hard surface |
| Two threats to Ocean ecosystems are | All of the above |
| Which ecosystem has the highest level of salinity | Salt Marsh |
| Estuaries are very productive ecosystems because they receive fresh nutrients from | Rivers and oceans |
| Which organism produces most of the food in an aquatic ecosystem | Phytoplankton |
| What are the two main types of freshwater wetlands | Marshes and swamps |
| Which of the following is not characteristic of wetlands | Wetlands are limited to Inland freshwater environments |
| Coral reefs are intricately shaped rock-like structures that are formed as a result of | The secretion of calcium carbonate by tiny marine animals |
| Which of the following is a threat to coral reefs? | All of the above |
| The types of organisms found in a pond or lake depend on | All the Above |
| Why doesn't photosynthesis occur in deep ocean water? | There is no sunlight |
| The majority of marine organisms are found in | Shallow, Coastal Waters |
| As they flow down a mountain to flatter ground, Rivers generally become | All of the above |
| What causes most Coastal pollution in the United States? | Industrial Waste and sewage |
| In the _____ Zone, life is diverse and abundant. | Littoral |
| Swamps are commonly found on | Flat, poorly drained land |
| Which of the following statements is not correct? | Riverton generally move faster, and their oxygen levels decrease, as they near the ocean |
| Which of the following is not an environmental function of wetlands? | Increase runoff |
| Each of the following is an example of parasite except | A cow in a pasture |
| The relationship between acacia trees and ants that live on them is an example of | Mutualism |
| Which of the following is most likely cause a large number of density-independent deaths in a population? | Winter storms |
| The density of a population is | The number of individuals per unit area |
| Which of the following organisms has the highest reproductive potential | Bacteria |
| The number of wild horses per square kilometer in a prairie is a horse populations | Density |
| The difference between a predator and a parasite is that a predator | Usually kills and eats its prey |
| Which of the following populations has a random dispersion? | Solitary snakes in a desert |
| In which of the following relationships is neither species harmed? | Commensalism |
| A true statement about parasitism is that parasites | May cause their host to become more vulnerable to predators |
| Example of a population is | All maple trees in a forest |
| A species of plant has exponential growth after it is introduced into an area where it has never lived. Which statement best describes exponential growth? | Within a few years the population increases dramatically |
| Relationship between a Canadian lynx and a snowshoe hare an example of | Predator and prey |
| Which of the following is one of the main properties used to describe a population? | Number of individuals |
| Which of the following situations best describes the use of a renewable source? | Building wooden furniture |
| During the _____ period(s), humans altered their habits. | All of the above |
| The _____ was not a direct result of the Industrial Revolution. | Over-hunting of large mammals |
| All of these fields of study contribute to environmental science except | Linguistics |
| In which country is the population likely to be increasing most rapidly? | Kenya |
| Using scientific information from chemistry and biology to devise a plan to clean up a lake and make it healthy again described | Environmental science |
| Why is the world's loss of biodiversity a source of concern? | Humans depend on other organisms for food and oxygen |
| A focus of environmental science not studied in ecology is the | Influence of humans on the environment |
| During the Agricultural Revolution, | Plants and animals were domesticated |
| _______ is a biodegradable material that becomes a pollutant if allowed to accumulate more rapidly than it can decompose | Newspaper |
| The classification and collection of data that are in the form of numbers is called | Statistics |
| The group that does not receive the experimental treatment in an experiment is the | Control group |
| By examining ______, scientists can test predictions for situations in which is impossible or unethical to use experiments. | Correlations |
| Scientists use statistics to | Analyze data |
| In an experiment, the factor of interest is called the | Variable |
| The average mass of a wolf in a pack of wolves is an example of | Mean |
| A model of a dinosaur is an example of _____ model. | Physical |
| The chance that an earthquake will occur in your town during the next year is example of | Risk |
| The experimental method includes which of the following steps? | Observing, hypothesizing, predicting, experimenting, and communicating results |
| Why are mathematical models important? | All of the above |
| How did the Himalayan mountains form? | Colliding tectonic plates |
| What are wind and water erosion not likely to affect? | Tides |
| Which of the following is the most logically active region in the surface of the Earth? | Boundaries between tectonic plates |
| Which of the following are producers of oxygen? | Plants |
| The ozone layer is located in the | Stratosphere |
| Large-scale atmospheric phenomena caused by air that is constantly in motion is known as | Weather |
| What is the estimated temperature of Earth's inner core? | 4,000 C to 5,000 C |
| The Richter Scale best describes the | Magnitude of an earthquake |
| The molten rock that is found in the upper mantle is | Magma |
| Which of the following is not one of the compositional layers of Earth? | Mantle |
| Which of the following is not an ecosystem? | Utility pole |
| The energy in most ecosystems comes from | The Sun |
| The organisms most likely to belong in the same species are | People at a football game |
| Which of the following statements about an organism's habitat is not true? | most organisms can survive if they are taken away from their habitat |
| The community of a pond is made up of all the | Populations of fish, insects, and other living organisms |
| Organisms can adapt | Both to their physical surroundings and other organisms/ both A and B |
| Some organisms are more likely to survive because they | All of the above |
| An organism is resistant to a chemical if it | Has a gene that protects it from the chemical |
| Most scientists classify organisms into | Six kingdoms |
| Which of the following animals is successful because it moves quickly, reproduce rapidly, and has a waterproof external skeleton? | Ant |
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Kylieeagan
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