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WorksheetsBIO Chapter 3 - Biosphere
Total questions: 41
Worksheet time: 21mins
A group of individuals that belong to a single species and that live together in a defined area is termed a(n):
population
ecosystem
community
biome
Which of the following is NOT true about matter in the biosphere?
Matter is recycled in the biosphere.
Biogeochemical cycles transform and reuse molecules.
The total amount of matter decreases over time.
Water and nutrients pass between organisms and the environment.
Which of the following is a primary producer?
an autotroph, like algae
a carnivore, like a lion
an omnivore, like a human
a detritivore, like an earthworm
Human activities, such as burning fossil fuels, move carbon through the carbon cycle. Which other processes also participate in the carbon cycle?
biological processes, like photosynthesis, only
geological processes, like volcanic activity, only
physical/chemical processes, like CO2 dissolving in oceans, only
a combination of biological, geological and chemical processes
What are the physical, or nonliving components of an ecosystem called?
abiotic factors
temperature conditions
biotic factors
antibiotic factors
Which statement describes ALL autotrophs?
All take in energy to assemble energy-rich compounds.
All are small, single-celled organisms, such as bacteria and algae.
All take in food and break it apart to release energy.
All harness the energy of sunlight through the process of photosynthesis.
Autotrophs can be classified into two groups according to which property?
energy source, either sunlight or chemicals
food type, either plant matter or animal matter
food quality, either living matter or dead matter
water quality, either fresh water or salt water
Rabbits are members of a community in a meadow. The rabbits eat grasses, clover, as well as roots, seeds, and tree bark. What describes the organisms that share the same trophic level as the rabbits?
snakes, hawks, and other animals that eat rabbits
community members that interact with rabbits
meadow animals that are about the same size as a rabbit
meadow animals that eat plants and plant products
Ethan is asked to research an organism that performs denitrification. Which strategy is the most likely to be successful?
Look for phytoplankton that perform photosynthesis.
Look for ocean-dwelling organisms that perform chemosynthesis.
Look for soil bacteria that convert atmospheric nitrogen to nitrates.
Look for soil bacteria that convert nitrates to nitrogen gas.
Ally is classifying a group of organisms that are either primary producers or consumers. What is the direct source of energy for ALL consumers?
either producers or other consumers
producers only
nonliving sources, such as sunlight
other consumers only
Which of the following BEST describes the flow of energy through a food chain?
Energy flows between primary producers and consumers, in either direction.
Energy flows from primary producers to consumers, in one direction only.
Energy flows between primary producers and consumers, in an endless cycle.
Energy flows from consumers to primary producers, in one direction only.
The diagram shows a model of an ecosystem. What does the model represent?
the total amount of energy in the ecosystem
the conservation of energy as energy transfers between organisms
the total biomass in each trophic level
the relative amount of energy available at each trophic level
A pyramid of biomass is one way to model an ecosystem. How does the amount of biomass generally change from the bottom of the pyramid to the top?
The amount of biomass varies widely, and both increases and decreases.
The amount of biomass varies only slightly, and may increase or decrease.
The amount of biomass increases.
The amount of biomass decreases.
Which statement BEST describes how matter moves within and between ecosystems?
Matter flows in a one-way direction through food chains and food webs.
Matter cycles between trophic levels in food chains and food webs only.
Matter is made and destroyed as it is used by living things.
Matter cycles through food webs and biogeochemical cycles.
Jake is developing a model of the carbon cycle, which involves the movement of carbon among various Earth systems. He begins by drawing the diagram shown below. What process is occurring at #5 (between the sun and tree)?
combustion or burning
photosynthesis
cellular respiration
decay
Olivia is studying the water cycle and its critical role in ecosystem functions. She is developing a model of the water cycle, and her initial work is shown below. Which arrow represents transpiration?
1
2
3
4
Olivia is studying the water cycle and its critical role in ecosystem functions. She is developing a model of the water cycle, and her initial work is shown below. Which arrow represents precipitation?
1
2
3
4
Olivia is studying the water cycle and its critical role in ecosystem functions. She is developing a model of the water cycle, and her initial work is shown below. Which arrow represents evaporation?
1
2
3
4
Olivia is studying the water cycle and its critical role in ecosystem functions. She is developing a model of the water cycle, and her initial work is shown below. Olivia is thinking about revising the model to represent the role of photosynthesis in the water cycle. Would including photosynthesis in the model be reasonable, and for what reason?
Yes, because water is a reactant, or input, of photosynthesis.
Yes, because water is a product, or output, of photosynthesis.
No, because water is necessary for photosynthesis but not changed by it.
No, because water is not involved in photosynthesis.
Atmospheric carbon dioxide levels have been increasing gradually for many years. Scientists cite this increase as one of the main causes of climate change, which is a serious environmental problem for people all over the world. One component of a possible engineering solution to this problem is to use plants, algae, or phytoplankton to increase the global rate of photosynthesis. What scientific reasoning provides evidence that this solution could be effective?
Plants and other photosynthetic organisms provide food for consumers, who perform cellular respiration.
Plants and other photosynthetic organisms change into fossil fuels over time.
Photosynthesis acts to remove carbon dioxide directly from the atmosphere.
Photosynthesis traps carbon dioxide in the soil.
Jake is developing a model of the carbon cycle, which involves the movement of carbon among various Earth systems. He begins by drawing the diagram shown below. What process is represented by box #2?
combustion or burning
photosynthesis
cellular respiration
decay
Jake is developing a model of the carbon cycle, which involves the movement of carbon among various Earth systems. He begins by drawing the diagram shown below. What process is represented by box #6 (above the car)?
combustion or burning
photosynthesis
cellular respiration
decay
Jake is developing a model of the carbon cycle, which involves the movement of carbon among various Earth systems. He begins by drawing the diagram shown below. Which of the following boxes DOES NOT represent a carbon reservoir?
5
1
7
3
Which term describes a group of different species that live together in a defined area?
a population
a community
an ecosystem
a biosphere
Primary producers are organisms that:
rely on other organisms for their energy and food supply
consume plant and animal remains and other dead matter
use energy they take in from the environment to convert inorganic molecules into complex organic molecules
obtain energy by eating only plants
Which of the following describes how ALL consumers get their energy?
directly from the sun
from eating primary producers
from inorganic chemicals like hydrogen sulfide
from eating organisms that are living or were once living
Which biochemical cycle does NOT include a major path in which the substance cycles through the atmosphere?
water cycle
nitrogen cycle
carbon cycle
phosphorus cycle
What substances are the PRODUCTS of photosynthesis?
carbon dioxide and water
water and oxygen
sugar and carbon dioxide
oxygen and sugar
What substances are the REACTANTS of photosynthesis?
carbon dioxide and water
water and oxygen
sugar and carbon dioxide
oxygen and sugar
The process of photosynthesis occurs in what organelle in a plant cell?
chloroplast
chlorophyll
mitochondria
stomata
In the food chain where grass is eaten by a mouse which is eaten by a cat which is eaten by a wolf, the grass contains 10,000 units of energy. How many units of energy would the wolf receive?
10
100
1000
10000
Which one is the correct sequence for the levels of organization in an ecosystem, from LARGEST to SMALLEST?
ecosystem, community, population, organism
population, community, ecosystem, organism
community, ecosystem, organism, population
organism, population, community, ecosystem
Which organisms would be considers primary consumers?
water fleas, insect, slug
diving beetle, slug, land plants
small fish, frog, newt
perch, heron, fox
Which of the following is one food chain within this food web?
water fleas -> newt -> perch -> small fish
land plants -> slug -> frog -> heron
tiny water plants -> newt -> perch -> heron
fox -> diving beetle -> water fleas -> tiny water plants
Carbon cycles through the biosphere in all of the following processes EXCEPT:
photosynthesis
transpiration
burning of fossil fuels
decomposition of plants and animals
Some soil bacteria can convert atmospheric nitrogen gas nitrates into usable nitrogen compounds (like ammonia) through the process of _________.
denitrification
ammonification
assimilation
nitrogen fixing
Nitrogen cycles through the biosphere and is required by organisms in order to form which macromolecules?
proteins and nucleic acids
proteins and carbohydrates
nucleic acids and carbohydrates
proteins and water
_______________ occurs if a pollutant, such as DDT, is picked up by an organism and is not broken down or eliminated from its body. Instead, it collects in the organisms body tissue and is passed onto higher trophic levels,increasing in concentration at each level.
biomagnification
succession
biomass
deforestation
Which statement is TRUE in regards to this food chain?
The algae is a primary consumer.
The sunfish is a secondary consumer.
The heron is a primary producer.
The snail is a secondary consumer.
The process of photosynthesis occurs in two stages: the Light reactions and the Calvin cycle (dark reactions). What is the purpose of the Light reactions?
Use water and sunlight to generate ATP and release oxygen gas as a waste produce.
Use water and sunlight to generate a sugar molecule and release oxygen gas as a waste product.
Use carbon dioxide and ATP to generate a sugar molecule for use or storage.
Use oxygen and ATP to generate a sugar molecule for use or storage.
The process of photosynthesis occurs in two stages: the Light reactions and the Calvin cycle (dark reactions). What is the purpose of the Calvin cycle?
Use water and sunlight to generate ATP and release oxygen gas as a waste produce.
Use water and sunlight to generate a sugar molecule and release oxygen gas as a waste product.
Use carbon dioxide and ATP to generate a sugar molecule for use or storage.
Use oxygen and ATP to generate a sugar molecule for use or storage.
