NEW
Font size
S
M
L
XL
WorksheetsEcosystem
Total questions: 18
Worksheet time: 22mins
Name
Class
Date
1.
One way to decrease the number of flying insects on your property is to increase bat populations by building bat houses. In this case, which is most likely the limiting factor for the bat population?
a)
food
b)
space
c)
water
d)
shelter
2.
Which limiting factor most affects the population growth of plants in a garden?
a)
space between plants
b)
number of seeds planted
c)
types of tools used in planting
d)
number of people tending the plants
3.
Which best describes an abiotic limiting factor in a population?
a)
animals
b)
plants
c)
water
4.
Which is an example of parasitism?
a)
cat and mouse
b)
tadpole and frog
c)
human and tapeworm
d)
caterpillar and butterfly
5.
Carolina wrens and painted buntings are two bird species that live in overlapping territories. They have different requirements for food and nesting. Which term best describes the relationship between the two species?
a)
parasitism
b)
symbiosis
c)
coexistence
d)
mutualism
6.
What is true of mutualistic relationships among organisms?
a)
The organisms ignore each other.
b)
The organisms cooperate with each other
c)
The organisms prey on each other
d)
The organisms compete with each other
7.
Which best describes the relationship between decomposers and producers?
a)
Decomposers provide producers with water.
b)
Decomposers absorb nutrients produced in the soil.
c)
Producers release energy from the sun through decomposers.
d)
Producers absorb nutrients from decomposed material in the soil
8.
Which best describes the effect on an ecosystem when populations of white-tailed deer are overhunted by people in an area?
a)
It decreases the amount of producers.
b)
It directly increases the population of decomposers.
c)
It disrupts the balance between predators and prey.
d)
It decreases competition for food among carnivores.
9.
Which organisms recycle carbon in decaying matter back into atmospheric carbon dioxide?
a)
fish
b)
fungi
c)
plants
d)
animals
10.
Which activity of the gopher transfers energy from one trophic level to another in its ecosystem?
a)
reproducing with other gopher species
b)
storing food underground
c)
digging burrows to live in
d)
eating the roots of many plants
11.
An energy pyramid is illustrated below.
Which statement best explains the flow of energy as it moves through the different levels?
Which statement best explains the flow of energy as it moves through the different levels?
a)
Energy decreases as it is lost as heat to the environment
b)
Energy increases as it is gained from the environment
c)
Energy is unavailable because it is used up by the organisms at Level 1.
d)
Energy is transferred as it is produced by organisms in the next level.
12.
Which best describes how energy from the sun relates to the energy a cow gets from eating grass in a field?
a)
The cow absorbs energy from the sun, and stores the energy in its body.
b)
The cow absorbs energy from the sun, and uses this energy to break down the grass it eats.
c)
The grass absorbs energy from the sun; the cow eats the grass and releases additional energy to the grass.
d)
The grass uses energy from the sun to make food; the cow eats the grass and breaks it down to release energy for the cow to use.
13.
Wildlife corridors are areas where wildlife can travel between two natural areas that are separated by urban development, such as highways. The development of wildlife corridors is an attempt to decrease the effect of which factor?
a)
excess predators
b)
limited shelter
c)
limited space
d)
excess water
14.
Under which condition would a population most likely increase?
a)
The carrying capacity exceeds the habitat area.
b)
The number of deaths exceeds the immigration rate
c)
The number of deaths exceeds the number of births.
d)
D. The amount of available resources exceeds the carrying capacity.
15.
Which term best describes two predators living in the same habitat who feed on the same prey?
a)
coexistence
b)
competition
c)
mutualism
16.
The relationship between an owl and a mouse is a
a)
parasite-host relationship
b)
symbiotic relationship.
c)
mutualistic relationship.
d)
predator-prey relationship
17.
Which best describes the role of nitrogen-fixing bacteria in the flow of energy?
a)
They convert carbon dioxide into nitrogen.
b)
They convert nitrogen into carbon dioxide.
c)
. They convert sunlight and nitrogen into energy-rich sugar molecules.
d)
They convert atmospheric nitrogen into molecules that other organisms can use.
18.
Through which process is water lost through the leaves of plants?
a)
condensation
b)
transpiration
c)
evaporation
d)
runoff
Reset
