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WorksheetsEcosystems + Populations
Total questions: 14
Worksheet time: 20mins
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
An earthworm that eats the decaying remains of plants and animals would be a...
carnivore
detritivore
omnivore
decomposer
A bear that feeds on plants and animals is a...
omnivore
carnivore
herbivore
scavenger
A cow that feeds only on plants is a...
Detritivore
Carnivore
Herbivore
Scavenger
An owl that feeds only on animals is a...
Carnivore
Decomposer
Detritivore
Omnivore
A mushroom that chemically breaks down organic matter is a...
Detritivore
Herbivore
Scavenger
Decomposer
A lobster that feeds on the carcass of an already dead animal is a...
Scavenger
Omnivore
Herbivore
Detritivore
The series of steps in which a large fish eats a small fish that has eaten algae is a...
food web
food chain
pyramid of numbers
pyramid of biomass
___% of energy is passed on to the next trophic level in a food chain
5
10
15
20
Which of the following is NOT true about matter in the biosphere?
matter is transferred in one direction through the biosphere
biogeochemical cycles transform and reuse molecules
the total amount of matter decreases over time
human activity does not affect the movement of matter
Label the water cycle with the following terms: 1. evaporation, 2. precipitation, 3. condensation
Label the carbon cycle
Label the nitrogen cycle
The primary factors affecting population growth include birth rate, death rate, immigration, and
density
geographic range
emigration
demography
