Worksheets7th Grade Ecology Test
Total questions: 33
Worksheet time: 17mins
Name
Class
Date
1.
What does the arrow represent in a food web?
a)
It shows which animals live next to each other.
b)
The flow of water from one organism to another
c)
The flow of energy from one organism to another
d)
It shows how diseases are passed from one organism to another
2.
Where do krill get their energy from?
a)
Phytoplankton
b)
Fish
c)
Phytoplankton & Fish
d)
Blue Whale
3.
Which is true about this food web?
a)
Elephant seals get their energy from penguins
b)
Elephant seals get their energy from killer whales
c)
Elephant seals eat killer whales
d)
Elephant seals and penguins compete for squid
4.
Which is true about killer whales and leopard seals?
a)
Both compete for fish as a food source
b)
Both are primary consumers
c)
Both are considered producers
d)
Both compete for penguins as a food source
5.
If seaweed and phytoplankton are removed from the ecosystem, what is true about the populations of the remaining organisms?
a)
The populations will decrease
b)
The populations will increase
c)
No change will take place
d)
Some populations will increase and some will decrease
6.
Which organisms are the producers in this food web?
a)
Fox and Buzzard
b)
Dragonfly, Berries, and Plantains
c)
Berries and Plantains
d)
Berries, Butterfly, and Greenfly
7.
Mice and rabbits both compete for
a)
foxes
b)
buzzards
c)
frogs
d)
plantains
8.
Trees in an ecosystem compete for which abiotic factor(s)?
a)
sunlight
b)
water
c)
space
d)
all of the options
9.
Which is an example of a primary producer?
a)
small shrubs
b)
rabbits
c)
coyotes
d)
earthworms
10.
Which is an example of a primary consumer?
a)
small shrubs
b)
rabbits
c)
coyotes
d)
earthworms
11.
Which is an example of a secondary consumer?
a)
small shrubs
b)
rabbits
c)
coyotes
d)
earthworms
12.
Which is an example of a decomposer?
a)
small shrubs
b)
rabbits
c)
coyotes
d)
earthworms
13.
Which group (level) contains the largest population and energy in the ecosystem?
a)
Primary producers
b)
secondary consumers
c)
tertiary consumers
d)
primary consumer
14.
What kind of relationship is a hawk eating a snake?
a)
Consumer-producer
b)
host-parasite
c)
predator-prey
d)
producer-consumer
15.
What kind of relationship is a vine that has overtaken a tree?
a)
Consumer-producer
b)
host-parasite
c)
predator-prey
d)
producer-consumer
16.
What kind of relationship is a rabbit that eats grass?
a)
Consumer-producer
b)
host-parasite
c)
predator-prey
d)
producer-consumer
17.
Which is considered a predator-prey relationship from this ecosystem?
a)
Leopard seal and fish
b)
Fish and phytoplankton
c)
Crab and blue whale
d)
Krill and penguin
18.
What is a biotic factor?
a)
A nonliving thing that influences or affects an ecosystem
b)
Anything living or nonliving in an ecosystem
c)
A living thing that influences or affects an ecosystem
d)
A chemical compound in an ecosystem
19.
What is an abiotic factor?
a)
A nonliving thing that influences or affects an ecosystem
b)
Anything living or nonliving in an ecosystem
c)
A living thing that influences or affects an ecosystem
d)
A chemical compound in an ecosystem
20.
Which is not an abiotic factor?
a)
sunlight
b)
plants
c)
water
d)
rocks and minerals
21.
Which is not a biotic factor?
a)
sunlight
b)
bacteria
c)
phytoplankton
d)
small fish
22.
What is a predator in an ecosystem?
a)
An organism that creates its own food through photosynthesis
b)
An organism that is hunted for food
c)
An organism that hunts for food
d)
An organism that lives on/in another organism for survival
23.
What is a prey in an ecosystem?
a)
An organism that creates its own food through photosynthesis
b)
An organism that is hunted for food
c)
An organism that hunts for food
d)
An organism that lives on/in another organism for survival
24.
What is a parasite in an ecosystem?
a)
An organism that creates its own food through photosynthesis
b)
An organism that is hunted for food
c)
An organism that hunts for food
d)
An organism that lives on/in another organism for survival
25.
What is a consumer in an ecosystem?
a)
An organism that creates its own food through photosynthesis
b)
An organism that is hunted for food
c)
An organism that eats other organisms for survival
d)
An organism that lives on/in another organism for survival
26.
What is a producer in an ecosystem?
a)
An organism that creates its own food through photosynthesis
b)
An organism that is hunted for food
c)
An organism that eats other organisms for survival
d)
An organism that lives on/in another organism for survival
27.
Which would have the greatest impact on seaweed in the ocean?
a)
Runoff from factories into streams and rivers
b)
Logging in a forest
c)
Installing wind turbines near the beaches
d)
Digging tunnels for a new interstate
28.
Adding chemical fertilizer to a yard helps keep the grass looking nice. What is a negative impact to the surface water?
a)
Fertilizer can be harmful to organisms in the yard.
b)
The soil undergoes a chemical change.
c)
The chemicals stay in the yard for years.
d)
The runoff from the grass puts harmful chemicals into streams and rivers.
29.
What is biodiversity?
a)
All of the abiotic factors in an ecosystem
b)
All of the different types of one organism in a region or ecosystem
c)
The variety of different types of organisms found in a region or ecosystem
d)
The abiity for organisms to adapt to their environment over time
30.
Where are the most biodiverse ecosystems located?
a)
Near the poles
b)
Near the equator
c)
In the Northern Hemisphere
d)
In the United States
31.
Which of the following is a biotic factor in an arctic ecosystem?
a)
Snow on the ground
b)
Harsh winds in the atmosphere
c)
Small shrubs with a shallow root system
d)
Shortened days because of the tilt of the Earth
32.
Which of the following are abiotic factors in a marine environment?
a)
Sunlight which allows producers to perform photosynthesis
b)
Coral populations
c)
Small fish that school together for survival
d)
Seaweed that lives near the surface of the water
33.
Which of the following is a biotic factor in a forest ecosystem?
a)
Rocks and pebbles in a stream
b)
Water that flows down a small hill
c)
Mosses which live in trees
d)
Sunlight which is able to penetrate through the treetops
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