WorksheetsEcology/Matter cycles
Total questions: 25
Worksheet time: 50mins
Name
Class
Date
1.
The diagram below shows the cycling of nutrients in an ecosystem.
The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system?
The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Inorganic nutrients
2.
An organism that produces its own food supply from inorganic compounds is called a(an)
a)
heterotroph
b)
consumer
c)
detritivore
d)
autotroph
3.
What is an ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to decomposers?
a)
food web
b)
an ecosystem
c)
food chain
d)
a population
4.
What is the term for each step in the transfer of energy and matter within a biological community?
a)
energy path
b)
food web
c)
trophic level
d)
food pyramid
5.
symbiotic relationship in which both organisms benefit
a)
competition
b)
Mutualism
c)
nitrogen fixation
d)
energy pyramid
6.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms.
d)
How carnivores get their food.
7.
diagram that shows the energy available to each trophic level in an ecosystem; 10% is passed on to upper levels, the rest is lost as heat
a)
succession
b)
cellular respiration
c)
energy pyramid
d)
biochemical cycle
8.
Members of a species in a defined area
a)
Ecosystem
b)
community
c)
biodiversity
d)
population
9.
Non-living factor that affects an ecosystem
a)
biotic factor
b)
abiotic factor
c)
food chain
d)
biome
10.
Organisms that breaks down and absorbs nutrients from dead organisms
a)
consumer
b)
trophic level
c)
decomposer
d)
species
11.
Consumer that eats plants
a)
heterotroph
b)
herbivore
c)
producer
d)
community
12.
All the organisms in a particular location, including their nonliving environment
a)
ecosystem
b)
carnivore
c)
niche
d)
population
13.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source.
14.
Nitrogen fixation processes nitrogen from which of the following sources?
a)
lightning
b)
fertilizers
c)
dead plants
d)
atmosphere
15.
Nitrogen makes up _____ percent of the atmosphere.
a)
66%
b)
78%
c)
90%
16.
In the food web shown, the snail would be considered...
a)
primary consumer
b)
secondary consumer
c)
tertiary consumer
d)
producer
17.
In this photo, what is an abiotic factor?
a)
Deer
b)
Grass
c)
rain
18.
A collection of organisms that belong to different populations but all live in the same area and interact with one another.
a)
Population
b)
Ecosystem
c)
Community
d)
Ecosphere
19.
Evaporation of water from the leaves of a plant gives of purified water to be evaporated.
a)
precipitation
b)
concentration
c)
transpiration
d)
evaporation
20.
78% of Earth's atmosphere is nitrogen gas. All living things need nitrogen as a part of DNA and RNA. Yet you and I, and other living things, cannot use the nitrogen in our atmosphere directly. One type of organism is responsible for "fixing" nitrogen or helping to put it in a form so other living things can use it. That organism is
a)
bacteria.
b)
fungi.
c)
plants.
d)
viruses.
21.
In a simple food chain, small fish eat algae; bigger fish eat the smaller fish; bears eat the bigger fish.
Using the above scenario, which of these would have the largest amount of energy?
Using the above scenario, which of these would have the largest amount of energy?
a)
algae
b)
bears
c)
big fish
d)
small fish
22.
An underground reservoir of water is known as ______
a)
An Estuary
b)
An Aquifer
c)
Sublimation
d)
Permafrost
23.
The living or once living organisms in an ecosystem
a)
Biology
b)
Abiotic
c)
Biotic
d)
Ecology
24.
Which of the following is the highest level of organization within the environment?
a)
population
b)
organism
c)
ecosystem
d)
biosphere
25.
These organisms must eat to obtain their energy
a)
autotrophs
b)
heterotrophs
c)
producers
d)
niche
100 %
