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WorksheetsAssessment 2-Food web and Flow of Energy
Total questions: 46
Worksheet time: 8hrs 40mins
Name the levels of ecological organization in order from smallest to largest.
Ecosystem, population, organism, community
Community, organism, population, ecosystem
Organism, population, community, ecosystem
Ecosystem, community, population, organism
What is the difference between the biotic and abiotic factors?
Biotic factors are living things and abiotic factors are nonliving things.
Biotic factors are nonliving things and abiotic factors are living things.
Complete the following statement: “Energy _______________, while matter _____________ through the environment.”
Flows, flows.
Flows, cycles.
Cycles, flows.
Cycles, cycles.
Photosynthesis...
removes carbon dioxide from the atmosphere
adds carbon dioxide from the atmosphere
Which of these organisms is capable of the following reaction:
6 H2O + 6 CO2 + solar energy --->C6H12O6 + 6 O2
Decomposing fungi
Humans
Fish
Grass
Products released during cellular respiration include (select all that apply).
Water
Oxygen
Sunlight
Carbon Dioxide
What is this called?
Food Web
Food Chain
When connecting grass and deer in a food chain, which way should the arrow face?
Towards the grass because the deer eats the grass
Towards the deer because the energy in the grass flows to the deer
What is this called?
Food Web
Food Chain
A willy wagtail is an omnivore. It eats leaves, seeds, and worms. Worms also eats the leaves. Snakes and bobcats are predators of willy wagtail. Which of the following shows the correct flow of energy?
Snakes -> Willy -> Leaves -> Worms
Willy -> Leaves -> Worms -> Snakes
Leaves -> Worms -> Willy -> Bobcats
Leaves -> Seeds -> Willy -> Worms -> Snakes -> Bobcat
What trophic level of a food web is completely absent from this diagram?
Producer
Primary consumer
Secondary consumer
Decomposer
How many first-level consumers are there for each producer?
2
3
4
5
Figure shows a food web arranged into trophic levels. How many energy-transferring steps away from the sun is the deer?
1
2
3
4
Use figure to compare the amount of energy available to the wolf if it eats only first-level consumers with the amount of energy available to the wolf if it eats only second-level consumers.
In this Food Web Pyramid, what is the proper name for the organisms above the producer level.
herbivores
consumers
carnivores
omnivores
In this Food Web Pyramid, which type of consumer gets only 10% of the energy stored in plants?
Herbivore
Carnivore
Omnivore
Secondary Consumer
How much energy is lost by other means at each trophic level?
90%
10%
100%
5%
Energy flows from primary producers to consumers, in one direction only
True
False
A vegan is someone who does not eat any animal products (like eggs, milk, or meat). What trophic level are they in?
producer
primary consumer
secondary consumer
tertiary consumer
Which of the following is true of a model of feeding relationships in an ecosystem?
There are several food chains, but not a food web
There are several food chains and several food webs
There is one food web, but no food chains
There is one food web and several overlapping food chains
Biomass is
Total gained energy
Total lost energy
total population in an area
the total mass of organisms in a given area or volume
Which type of pyramid shows the amount of living tissue at each trophic level in an
ecosystem?
Number Pyramid
Energy Pyramid
Biomass Pyramid
Food Pyramid
In a pyramid of biomass in an ecosystem, the amount of biomass increases as you go up the pyramid.
True
False
In some areas, foresters plant one tree for every tree they cut. This activity is an example of
lack of management of nonrenewable resource
a good conservation practice for renewable resources
a good conservation practice for nonrenewable resources
lack of concern for renewable natural resources
The tall wetland plant, purple loosestrife, was brought from Europe to the United States in the early 1800s as a garden plant. The plant's growth is now so widespread across the United States that it is crowding out a number of native plants. This situation is an example of
an unintended effect of adding a species to an ecosystem
the results of the use of pesticides
the recycling of nutrients
the flow of energy present in all ecosystems
How might an introduced plant species kill native plant species?
Its rapid growth can deprive native plants of sunlight and resources.
Its rapid growth can deprive native plants of competition.
It can cause soil loss from erosion.
Its rapid growth can deprive native plants of oxygen.
How does eutrophication cause the death of aquatic organisms
the build up of carbon dioxide in the water
the lack of nitrogen in the water
the lack of carbon dioxide in the water
the lack of oxygen in the water
How can an algal bloom (eutrophication) lead to a decrease in dissolved oxygen? Select all that apply.
Algae is a heterotroph and consumes more oxygen than it produces.
Decreased light penetration limits photosynthesis below the surface.
Bacteria consume oxygen as they decompose dead algae and other organisms.
Decomposes that would have produced oxygen are outcompeted by algae.
How does land use cause a reduction in biodiversity?
The primary cause of invasive species introduction is
too much food
human actions
weather events
asteroids
Invasive species alter the ecosystem by ___________ in population quickly, thereby _____ for food for with native species.
increasing ; competing
decreasing ; sharing
