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HW-85
Biologist’s Name: _________________________________ Class: 8__ Date: ____________
Mrs. Bouchard – 8th Grade Science
Ecology Unit Pre-Test
DIRECTIONS: Answer each question below to the best of your ability.
Many (or all) of the questions will not be familiar – that’s fine! Do the best you can!
Next to each question, use the check boxes to tell me if the material looks familiar to you.
Finally, when you are done, complete the answer key at the back!
1. Which list of terms is in the correct order, from simplest to most complex?
A. organism, community, population, ecosystem
B. organism, population, ecosystem, community
C. organism, population, community, ecosystem
D. organism, community, ecosystem, population
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
2. Biotic factors in an ecosystem may include:
A. bacteria, soil, and water
B. plants, animals, and bacteria
I know this!
C. temperature, water, and soil
I think I know this,
but I’m not sure.
D. animals, fungi, and temperature
I have NO idea.
3. The energy for almost all ecosystems is supplied by the Sun. Which of the following flowcharts
best represents how energy flows through an ecosystem?
A. plants --> herbivores --> carnivores --> sunlight
B. carnivores --> sunlight --> plants --> herbivores
C. sunlight --> plants --> herbivores --> carnivores
D. sunlight --> herbivores --> plants --> carnivores
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
4. If there were no decomposers, which of the following would most likely happen?
A. Plants and animals would remain living for a longer period of time
I know this!
B. Some plants might die due to a shortage of important nutrients.
C. Animals would start carrying out photosynthesis
D. The amount of dead plant and animal matter would decrease.
I think I know this,
but I’m not sure.
I have NO idea.
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5. Which of the following is a secondary consumer in the food web shown
above?
A. Frog
B. Earthworm
C. Algae
D. tadpole
6. According to the food web above, which of the following is true about
lizards?
A. Ants consume lizards.
B. Lizards consume ants
C. Lizards are not consumers.
D. Lizards eat snakes
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
7. Which of the following lists identifies organisms that are producers in food webs?
A. algae, ferns, sunflowers
I know this!
B. mushrooms, bacteria, earthworms
C. termites, red foxes, shrews
I think I know this,
D. woodpeckers, cardinals, grasshoppers
but I’m not sure.
8. Ants and acacia trees have a mutualistic relationship because
A. they benefit each other.
B. they are part of the same ecosystem.
C. they are both adapted to a humid climate.
D. the ants eat part of the acacia tree.
I have NO idea.
I know this!
I think I know this,
but I’m not sure.
I have NO idea.
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9. Any abiotic or biotic factor that controls the number of individuals in a population is
A. Pollutant
B. Reproductive potential
C. Limiting factor
D. Community
ANSWER SHEET:
When you are done, write your answer for all 9 questions next to the correct question number below.
Also write “K” for “Know This,” “T” for “Think I Know” or “N” for “No Idea.”
Question
Number
Example
Answer
B
Do I
Know
This?
K
1
2
3
4
5
6
7
8
9