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Worksheets7th Life Science Review - Ecology
Total questions: 35
Worksheet time: 20mins
Name
Class
Date
1.
A parrotfish will graze with a rabbitfish for protection. The rabbitfish doesn't benefit.
What type of relationship is this?
What type of relationship is this?
a)
mutualism
b)
commensalism
c)
parasitism
d)
none of the above
2.
Human intestines give good bacteria a place to live. The good bacteria help break down food. What type of relationship is this?
a)
mutualism
b)
commensalism
c)
parasitism
d)
none of the above
3.
Hook worms enter through the skin and live off the blood of the host.
What type of symbiotic relationship is this?
What type of symbiotic relationship is this?
a)
mutualism
b)
commensalism
c)
parasitism
d)
none of the above
4.
After walking through a field, you find a tick attached to your leg. What is the tick's relationship to you?
a)
Predator
b)
Decomposer
c)
Producer
d)
Prey
5.
A close long term association between 2 or more species
a)
Mutualism
b)
Commensalism
c)
Symbiosis
d)
Parasitism
6.
Honey guide birds alert and direct badgers to bee hives. The badgers then expose the hives and feed on the honey first. Then the honey guide birds eat.
a)
mutualism
b)
commensalism
c)
predation
d)
competition
7.
The stork uses its saw-like bill to cut up the dead animals it eats. As a result, the dead animal carcass is accessible to some bees for food and egg laying.
a)
Commensalism
b)
Mutualism
c)
Parasitism
d)
Predation
8.
Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales. What kind of relationship is this?
a)
Mutualism
b)
Parasitism
c)
Commensalism
9.
Aphids are tiny insects that live on and eat the leaves of plants, removing vital nutrients from the plants.
a)
Predation
b)
Parasitism
c)
Commensalism
d)
Mutualism
10.
What term is given by scientists to the living parts of an ecosystem?
a)
Biotic Factors
b)
Abiotic Factors
c)
Community
d)
Population
11.
Abiotic factors are parts of the environment that are...
a)
Nonliving
b)
Living
c)
Populations
d)
Vegetation
12.
What might occur when a carnivore is removed from the food web?
a)
A) Nothing. Organisms cannot impact things below them on the energy pyramid.
b)
B) Primary consumers will overpopulate.
c)
C) Plants will be over browsed by herbivores.
d)
D) both B and C might occur.
13.
Consumer that eats animals or meat
a)
carnivore
b)
omnivore
c)
consumer
d)
producer
14.
This is an image of a _________.
a)
consumer
b)
scavenger
c)
decomposer
d)
producer
15.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
16.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
17.
Which of the following best describes the small bird in the food web above?
a)
primary and secondary consumer
b)
secondary and tertiary consumer
c)
primary consumer only
d)
secondary consumer only
18.
What does this diagram display?
a)
The predator-prey relationship between vertebrates
b)
The movement of energy throughout an ecosystem
c)
The changing types of organisms in a forest
d)
The standard lifespan of trees and animals
19.
The grass that the mice eat contains energy. what is the source of energy for the grass?
a)
rain water
b)
the Sun
c)
the soil
d)
minerals
20.
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
a)
80%
b)
90%
c)
10%
d)
20%
21.
Which of the following illustrates the correct ordering of trophic levels?
a)
decomposers-carnivores-autotrophs-herbivores
b)
herbivores-autotrophs-carnivores-decomposers
c)
autotrophs-herbivores-carnivores-decomposers
d)
carnivores-producers-omnivores
22.
The rabbit in this food web would be considered a:
a)
Decomposer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
23.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
24.
Why are producers found at the base of the pyramid?
a)
They create all of the energy and therefore have the most energy of all of the trophic levels
b)
There are more plants than animals.
c)
They begin the flow of energy in an ecosystem.
d)
All of these answers are correct.
25.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
26.
In the energy pyramid below, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
27.
Organisms that feed on both living producers and other consumers.
a)
Carnivores
b)
Omnivores
c)
Herbivores
d)
Detritivores
28.
An organism that lives by breaking apart dead organic matter into simpler parts is...
a)
scavenger
b)
consumer
c)
decomposer
d)
carnivore
29.
The number of individuals a habitat can sustain with the resources it has available
a)
Carrying capacity
b)
Limiting factors
c)
Resources
d)
Population
30.
Which of the following would INCREASE the carrying capacity of an ecosystem?
a)
increase in predators
b)
disease
c)
increase in available food
d)
drought
31.
The arrows in a food chain or web represent ...
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show the direction the energy is flowing between organisms.
d)
They represent how water is transferred within a habitat.
32.
Food, water, sunlight, shelter, and space are resources that are often __________.
a)
limiting factors
b)
wet
c)
messy
d)
found in rocks
33.
If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?
a)
The bird population would stay the same
b)
The bird population would infinitely increase
c)
The bird population would decrease
34.
What would happen if the population of hawks suddenly increased? How would it affect the other organisms in the ecosystem?
a)
The snakes would decrease due to more hawks eating them
b)
All of the population of organisms would increase
c)
The biotic factors in the ecosystem would increase
d)
The hawks predators would decrease
35.
Will competition increase/decrease the carrying capacity of an ecosystem for the animal in competition?
a)
Decrease
b)
Increase
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