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WorksheetsUnit 4 Ecology
Total questions: 16
Worksheet time: 32mins
Name
Class
Date
1.
The Sun is a ...
a)
Tertiary Producer of energy
b)
Primary Procuder of energy
c)
Secondary source of energy
d)
Producer of water
2.
The role of __________________________, in a food chain, is to return or recycle the primary chemical compounds of organisms back to the chain: carbon, hydrogen, nitrogen, and other minor compounds.
a)
Prey (deer, water, buffaloes)
b)
Consumers (lions, tigers)
c)
Producers (plants, trees)
d)
Decomposers (bacteria, fungus)
3.
Consumers in an ecosystem serve a 'healthy' role for a species by consuming animals that are either too weak or too _________________.
a)
Hyper
b)
Fast
c)
Old
d)
Young
4.
A series of organisms interrelated in their feeding habits, the smallest being fed upon by a larger one.
a)
Food Chain
b)
Food Links
c)
Food Web
d)
Food Rope
5.
Zebra mussel populations are growing explosively in the river systems of the central United States. The best explanation for this unchecked population growth is that
a)
The muddy the water around them is making it difficult for their natural enemies to see them.
b)
Predators are too few to slow down population growth of the mussels.
c)
A mutation caused by pollution has increased their reproductive rate.
d)
They are better adapted to the environment than competing species.
6.
A cow's herbivorous diet indicates that it is a(n)
a)
Primary Consumer
b)
Decomposer
c)
Secondary Consumer
d)
Autotroph
7.
Which animal in this food web is the omnivore?
a)
Owl
b)
Frog
c)
Mouse
d)
Grasshopper
8.
In the relationship between aphids and rose plants , aphids feed on rose leaves, killing the plant. Which type of relationship is this?
a)
Competitive Relationship
b)
Predatory Relationship
c)
Mutually Beneficial Relationship
9.
In the relationship between insects and rhinos , insects live on rhinos and eat the harmful parasites off of their skin. What type of relationship is this?
a)
Competitive Relationship
b)
Predatory Relationship
c)
Mutually Beneficial Relationship
10.
In the relationship between viruses and people , a virus infects a person and makes them sick. What type of relationship is this?
a)
Competitive Relationship
b)
Predatory Relationship
c)
Mutually Beneficial Relationship
11.
In the relationship between wolves and arctic foxes , wolves and arctic foxes feed on snowshoe rabbits. What type of relationship is this?
a)
Competitive Relationship
b)
Predatory Relationship
c)
Mutually Beneficial Relationship
12.
In the relationship between Lactobacillus bacteria and humans , Lactobacillus bacteria live in the human digestive system and help humans digest food. What type of relationship is this?
a)
Competitive Relationship
b)
Predatory Relationship
c)
Mutually Beneficial Relationship
13.
In the relationship between owls and snakes in a forest ecosystem, owls and snakes prey on mice. What type of relationship is this?
a)
Competitive Relationship
b)
Predatory Relationship
c)
Mutually Beneficial Relationship
14.
If these organisms were arranged in a food pyramid, which organism would have the least amount of total energy available?
a)
Lions
b)
Lizards
Trees
Trees
c)
Lizards
d)
Cows
15.
Which population would increase most if the insects were eliminated?
a)
Decomposers
b)
Producers
c)
Primary Consumers
d)
Secondary Consumers
16.
If a fire burned part of a forest ecosystem, which one of these would most likely happen?
a)
All of the animals would die.
b)
All of the plants and seeds would be destroyed forever.
c)
A flood would bring new rich soil.
d)
Many of the animals would move to a nearby part of the ecosystem.
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