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- 1. Multiple Choice
The flow of energy through living systems can be modeled as food chains, food webs, or energy pyramids. The energy organisms need to live and grow first enters the ecosystem when which of the following occurs?
Plants take in light energy from the sun
Decomposers break down dead organisms
Primary consumers eat plants for food
Secondary consumers eat primary consumers
- 2. Multiple Choice
Which of the following best describes how energy is transferred in a food web?
All energy is transferred to each level of a food web.
Energy flows from producers to one or more levels of consumers.
Consumers transfer their energy to producers.
Decomposers get their energy directly from the sun.
- 3. Multiple Choice
Mr. Smith provides a diagram of a food web and asks the students to identify the various ways matter is flowing through these relationships. The diagram is provided. Based on the diagram, it is reasonable to conclude that matter could follow which of the following paths as it cycles through this ecosystem?
Plant seeds --> grass --> deer
Plant seeds --> field mouse --> robin
Eagle --> deer --> plant seeds
Grass --> deer --> mountain lion
- 4. Multiple Choice
Organisms that are responsible for taking in the light energy to make their own food are known as which of the following?
Consumers
Heterotrophs
Producers
Decomposers
- 5. Multiple Choice
Food webs diagram the complex relationships of energy flow in an ecosystem containing a variety of producers and consumers. A diagram is provided. Which of the following correctly shows one path that energy would flow through this ecosystem?
Star grass --> termite --> wildebeest --> aardvark
Hyena --> aardvark --> impala --> harvester ant
Grasshopper --> termite --> warthog --> hare
Red oat grass --> termite --> wildebeest --> lion
- 6. Multiple Choice
A food web diagram is provided. Based on this diagram, which three consumers all get their energy from the same producer?
Squirrel, robin, and field mouse
Squirrel, deer, and mountain lion
Prairie grass, deer, and mountain lion
Plant seeds, field mouse, and snake
- 7. Multiple Choice
Destiny is given a list of organisms and asked to determine how these organisms interact together. Destiny draws them in a food web diagram, which is provided. Based on her diagram, what is the role of the sunfish in this food web?
To break down waste products made by insect larvae
To provide energy for the bass and snapper turtles
To take in light from the sun and produce food
To consume the algae and other pond plants
- 8. Multiple Choice
A diagram is provided. Which of the following can be determined by this diagram?
The energy of the mongoose is passed on to the hare.
The cheetah supplies energy to a variety of organisms.
The energy of the acacia tree is passed on to the impala.
The aardvark, pangolin, and mongoose are all producers.
- 9. Multiple Choice
Noah has collected a mold specimen found on a tree in his backyard. Noah knows the mold is a decomposer, but what role does mold play in a food web?
Breaks down organic wasters and dead organisms
Uses sunlight and water to produce its own food
Releases oxygen into the atmosphere for respiration
Provides the energy that animals need for food
- 10. Multiple Choice
A food web shows all energy transfer interactions within a sample of organisms. A food web diagram is provided. The role of the snapper turtle is best defined by which of the following?
To break down waste products made by producers, such as algae
The top consumer that receives its energy from other consumers
Converts light energy from the sun and transfer it to consumers
Provides energy to the sunfish, snails, and bass
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