Exploring Ecosystems: Multiple Choice and Short Answer Assignment
This assignment will help you review what you have learned about ecosystems. Answer each question carefully. For multiple-choice questions, choose the best answer. For short answer questions, write a complete sentence or two to explain your ideas.
Question 1
Which of the following is an example of a biotic factor in an ecosystem?
A tree
Sunlight
Water
Soil
Question 2
What do we call all the living and nonliving things that interact in a specific area?
Ecosystem
Population
Community
Habitat
Question 3
Which of these is a producer in an ecosystem?
Grass
Rabbit
Wolf
Mushroom
Question 4
What role do decomposers play in an ecosystem?
Break down dead plants and animals
Make food using sunlight
Eat only plants
Hunt other animals
Question 5
Which of the following is an example of a food chain?
Grass → Rabbit → Fox
Sun → Water → Soil
Tree → Soil → Water
Rock → Grass → Sun
Question 6
What would most likely happen if all the plants in an ecosystem died?
Animals would have less food and might die
There would be more oxygen
Decomposers would stop working
More sunlight would reach the ground
Question 7
Which of these is an abiotic factor in an ecosystem?
Temperature
Frog
Grasshopper
Bacteria
Question 8
What is a population in an ecosystem?
All the members of one species in an area
All living things in an area
All nonliving things in an area
All plants in an area
Question 9
Name one way humans can have a positive impact on an ecosystem.
Question 10
Explain why it is important for an ecosystem to have both producers and consumers.
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