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Worksheets7th Grade - Ecology Levels of Organization
Total questions: 23
Worksheet time: 13mins
List the levels of organization from smallest to biggest
cell, tissue, organ, organ system, complex organism, population, community, ecosystem, biome, biosphere
cell, tissue, organ, complex organism, population, organ system, community, ecosystem, biome, biosphere
cell, tissue, organ, organ system, complex organism, community,
population, ecosystem, biome, biosphere
Identify the abiotic factors
temperature
water depth
dear
butterfly
Identify biotic factors
deer
butterfly
wind
tree
Organisms are divided into groups depending on how they get...
energy
food
water
Producers get their food through ____.
photosynthesis
water
soil
chemosynthesis
A diagram that shows how food is passed from one organism to another
food chain
food web
energy pyramid
A diagram that shows the feeding relationships from organism to ecosystem.
food chain
food web
energy pyramid
Which is more like what happens in an ecosystem?
Food chain
Food web
energy pyramid
A diagram that shows the loss of energy in organisms
energy pyramid
food web
food chain
How was the balance in the ecosystem disrupted by the disappearance of the gray wolf?
The elk population increased
The elk population decreased
The elk population stayed the same
List the food / energy pyramid from largest to smallest
producers, herbivores, carnivores, carnivorous
carnivorous, carnivores, herbivores, producers
producers, herbivores, carnivorous, carnivores
Food = energy, some ____, some ____.
used; stored
up; down
big; small
Energy is stored or used at each level or lost as (a) .
Most energy and mass is at the ____ level.
lowest
highest
Loss of any level has a ____ effect on the other levels.
negative
positive
no change
The loss of one organism in the food webs has ____ effect on the rest of the ecosystem.
less
more
no effect
the number of people, other living organisms, or crops that a region can support without environmental degradation.
carrying capacity
ecosystem capacity
habitat capacity
Name the resources affected by competition
food
shelter
space
sunlight
air
A long term change in a species is called
co-evolution
evolution
natural selection
Matter is used over and over through a ____.
cycle
transition
evolution
The movement of water between oceans, atmosphere, land and living thins is known as ____.
water cycle
condensation
precipitation
_____ is the basis of the carbon cycle.
Photosynthesis
carbon
sugar
oxygen
Living things need nitrogen to build ____ and ____ for new cells.
protein; DNA
carbon dioxide; oxygen
sugar, fat
