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Unit 1 Test
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Questions in this quiz (33)
1The graduating class of a high school would like to give the school a gift that would have a positive impact on the environment. Which plan would be the best choice?
- Aintroducing a new population of foxes, the school mascot, to school grounds
- Bplanting native trees along the border of the school property
- Cmaking wooden benches by harvesting trees from school property
- Dclearing an area to make room for additional student parking
2Stormwater flow increases with the following factor
- AIncrease in mowed grass fields
- BDecrease in impervious surfaces
- CIncrease in rain gardens
- DIncrease in rain gutters linked and piped away from the building
3Before a new shopping center can be built on previously undeveloped land, the builders
must submit a proposal to the local government for approval. Which statement identifies an environmental concern associated with the development of the shopping center?- AThe new shopping center would increase the biodiversity of the area.
- BBuilding the center would decrease the amount of pollution in the area.
- CThe new shopping center would increase competition with already existing businesses.
- DBuilding the center would decrease resources needed by local organisms.
4Which row in the chart below correctly pairs a human activity with its impact on the environment?
- A1
- B2
- C3
- D4
5For centuries, humans have used resources from coastal areas and open ocean waters. An example of an activity that would promote the conservation of coastal areas and ocean resources is
- Aharvesting large numbers of different fish species
- Bencouraging the construction of factories along the ocean shoreline
- Callowing all-terrain vehicles access to beach areas
- Dcreating protected zones of natural grasses and shrubs in beach areas
6It is usually desirable to manage soils in ways that maintain a high infiltration rate because this results in
- Amore water becoming available to sustain plant productivity
- Bmore water flowing in rivers, especially during rainy weather
- Cless leaching of chemicals applied to the soil surface
- DNone of the above
7Negative impacts of sediments in our waterways include:
- Acovering up fish spawning areas
- Ball of the answers are negative impacts
- Cblocking available light for aquatic plant
- Dcovering gills of aquatic organisms making gas exchange difficult
8According to the climate chart below, which months have the greatest potential for contaminating groundwater or surface water in the watershed with pollutants in the soil?
- AMarch-April
- BSeptember-October
- CJune-July
- DJanuary-February
9Two sites, both covered with mowed grass were measured using a clinometer. A clinometer measures the slope or gradient of a surface. The clinometer reading for site A was 30° while the clinometer reading for site B was 10°. You would expect
- ALower rates of water infiltration at site A
- BMore evidence of erosion at site B
- CAll answers are correct
- DLess runoff at site A
- EHigher rates of water infiltration at site A
10Which of the following correctly explains what happens to the level of oxygen dissolved in water when organic waste is put in the water?
- AThe levels would remain the same because organic waste would get used by organisms in the water
- BThe levels would increase because of the availability of nutrients to animals that live in the water
- CThe levels would decrease because of the higher temperatures of the water
- DThe levels would decrease because of the bacteria feeding off the waste and using the oxygen for cellular respiration
11Which of the following is a major reason for eutrophication?
- Acontamination by pathogens
- Brunoff of nutrients from land
- Cpresence of heavy metals
- Dsoil erosion
12pH is a measure of how acidic or alkaline a water source is. This is important when identifying the effect of a water source on living things in the habitat because
- Aa low or high pH water source will have more ions (charged particles) that can negatively affect an organism's ability for form cells and cell parts
- Ba low pH has a higher amount of hydrogen for organisms to use to build cells and cell parts
- Ca high pH has a higher amount of hydrogen for organisms to use to build cells and cell parts
- Dorganisms are adapted to live in a certain pH, generally around 7
13The process of converting nitrate to nitrogen gas and nitrous oxide is called:
- Anitrogen fixation
- Bdenitrification
- Ctranspiration
- Dammonification
- Eeutrophication
14Nitrogen accounts for nearly 79% of the air. Still nitrogen is the most limiting nutrient for plant growth because
- AHigh energy is required to break a triple bond
- BNitrogen almost an inert gas, N involved reactions require extreme conditions such as high temperature
- CN˘2 cannot be directly utilized by plants
- DAll of the above
15Denitrification, the process that returns N˘2 to the atmosphere occurs by
- AHaber-Bosch Process
- BEvaporation
- CBiological organisms found in soils
- DLightning
16The major reservoir for phosphorus is/are
- Aatmosphere
- Bsoil and rocks
- Coceans
- Daquifers
17Which of the following elements enters terrestrial organisms primarily from the atmosphere rather than from absorption from the soil.
- Acalcium
- Bnitrogen
- Csulfur
- Dphosphorus
- Ecarbon
18Rising levels of atmospheric carbon dioxide will cause which of the following changes in oceanic chemistry?
- Alower pH
- Bhigher pH
- Cdecreased levels of H+
- Dincreased level of carbonic acid
- Eincreased deposition of calcium carbonate
19In the carbon cycle, the main way that carbon moves from the atmosphere to the geosphere is through
- Aterrestrial plants absorbing it for use in photosynthesis and making it into plant cells that never get decomposed
- Bdecomposers breaking down terrestrial and marine organisms and releasing carbon dioxide and methane
- Cmarine organisms taking it from the water to make into calcium carbonate shells which get deposited and buried on the bottom of the ocean
- Dterrestrial animals absorbing it from the soil forming cell parts that are buried when the organism dies
20Your are able to transport the atoms and molecules necessary for cell function to your cells because water is a _______________ meaning it can dissolve _________ and _________ molecules.
- Amolecule with high specific heat; ice and water vapor
- Bcohesive substance; carbon and oxygen
- Cuniversal solvent; ionic and covalently bonded
- Duniversal solvent; oil and water
21Desert temperature ranges between night and day may vary by as much as 50°C while temperatures ranges between night and day in temperature deciduous forest at the same latitude will only vary by approximately 15°C. This happens because water
- Aall of the answer choices are correct
- Bhas high specific heat
- Cforms hydrogen bonds
- Dis polar
- Eis cohesive
22Disadvantages to animals living in groups (example: deer) include
- Aall of the choices are correct
- Bnone of the choices are correct
- Cincreased competition for resources
- Dinterference with reproduction
- Eincreased chance of disease and parasites
23A benefit of animals living in a group include which of the following?
- Anone of the answer choices are correct
- Bhelping to raise offspring
- Cprotection against predators
- Dfinding and procuring food
- Eall of the answer choices are correct
242018 has seen more acreage than ever destroyed by wildfires. We expect to see changes in the biodiversity of the forest ecosystem but also for the aquatic (river, lake and ocean) ecosystems in the area of the fires. The biodiversity of the aquatic ecosystems is expected to decrease due the
- Adensity dependent limiting effect of increased competition for food on population size
- Bdensity independent limiting effect of sediment input from erosion on population growth
- Cdensity independent limiting effect of increased competition for food on population size
- Ddensity dependent limiting effect of sediment input from erosion on population growth
25Why is biodiversity important to ecosystems?
- AIt increases at each level of the food chain.
- BIt reduces the number of insects in a given ecosystem.
- CIt allows animals to feed exclusively from one type of plant.
- DIt helps populations adapt to ecological changes.
26Which of the following would be most effective in slowing the loss of biodiversity?
- Afreezing fertilized eggs of endangered animals in case the species become extinct in the wild
- Bcreating large parks/preserves in biodiversity hotspots
- Crequiring every country to maintain a seed bank
- Dsetting aside small plots of land in a variety of ecosystems, such as forests, grasslands, and marshes
27Two organisms live in close association with one another. One benefits while the other is unaware of the first organism. The relationship is best described as
- ACommensalism
- BMutualism
- CParasitism
- DCompetition
- EPredation
28Which letter shows the carrying capacity (K) of a population?
- AA
- BB
- CC
- DD
- EE
29Which letter shows a population in most unfavorable conditions?
- AA
- BB
- CC
- DD
- EE
30What causes a logistic growth curve to level off?
- Amortality decreases in the population
- Bthe logistic growth curve never levels off
- Cthe reproduction rate decreases and the mortality rate increases
- Dthe population stops reproducing
- Ethe population shifts from a clumped to a uniformly spaced dispersion
31A researcher concludes from a 10-year study that the biodiversity of an ecosystem had increased. Which set of observations represents evidence for this claim?
- AThere were fewer niches for decomposers and less stability.
- BThere were more niches and greater stability in the ecosystem.
- CThere were more niches and less energy lost as heat in the ecosystem.
- DThere were fewer niches for consumers and greater cycling of materials.
32Burmese pythons are large snakes that have been introduced into the Florida Everglades ecosystem. Burmese pythons and alligators hunt the same prey. One likely effect of the introduction of the pythons is that
- Anone of the answer choices are correct
- Balligators will have more prey available
- Calligator populations will decline
- Dpythons will become native to the Everglades
- Epythons will become an endangered species
33The concentration of potassium is higher in red blood cells than in surrounding blood plasma. This higher concentration is maintained by the process of
- Acirculation
- Bdiffusion
- Cactive transport
- Dexcretion
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- 9th grade Biology Quiz on Unit 1 Test, created by Allison Wheeler on 15/02/2022.
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- Allison Wheeler
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