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WorksheetsUnit D: Ecosystem
Total questions: 19
Worksheet time: 10mins
Name
Class
Date
1.
All of the biotic and abiotic factors in an area that interact with each other are known as ________.
a)
Ecosystem
b)
Community
2.
What is the difference between biotic and abiotic factors?
a)
Abiotic factors are nonliving, biotic factors are living.
b)
Abiotic factors are living, biotic factors are nonliving.
3.
Of the following, which is a nonliving feature of the environment?
a)
Protists
b)
Water
4.
Which best explains the importance of nitrogen in cycling energy and matter?
a)
Nitrogen increases protein production in plants.
b)
Nitrogen decreases protein production in plants.
5.
Which interaction illustrates a terrestrial-aquatic food web relationship?
a)
A turtle burying eggs in the sand
b)
A bear eating fish in a river
6.
What type of relationship exists between the trees and kudzu growing on them?
a)
Competition
b)
Mutualism
7.
What is a habitat?
a)
The role of an organism
b)
the place where an organism lives
8.
Which of the following correctly lists the levels in an ecosystem from smallest to largest?
a)
population, ecosystem, community
b)
population, community, ecosystem
9.
An organism that photosynthesizes is a(n)
a)
consumer
b)
autotroph
10.
Which of these is a role of plants in the carbon cycle?
a)
Plants take in carbon dioxide that is released from animals
b)
Plants use oxygen to make carbon dioxide
11.
This symbiotic relationship occurs when one organism benefits at the expense of another organism.
a)
Parasitism
b)
Commensalism
12.
A symbiotic relationship in which both organisms benefit is ...
a)
mutualism
b)
commensalism
13.
What are grasses most likely to compete with?
a)
grasses only
b)
grasses and other plants
14.
A group of organisms of the same species living in the same place is a ...
a)
community
b)
population
15.
The role of an organism in an ecosystem is called a/an ...
a)
habitat
b)
niche
16.
Which process removes carbon dioxide from the atmosphere during the carbon cycle?
a)
photosynthesis
b)
respiration
17.
The diagram shows a food chain. Which organism is a herbivore?
a)
Grasshopper eating the grass
b)
Grass growing from energy produced by the sun
18.
The process by which bacteria returns nitrogen to the air is called ___________________.
a)
denitrification
b)
nitrogen fixation
19.
Animals transfer carbon to plants by ...
a)
carbon dioxide
b)
oxygen
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