Review Energy Flow

Multiple Choice

What are the Abiotic factors in this image? 

• water, sunlight, dirt, air
• birds and plants
• birds, water, dirt
• plants, water

Multiple Choice

Producers are extra special organisms because they....

• eat only plants

• obtain nutrients by eating other organisms

• make their own food through the process of photosynthesis

• break down dead organisms into usable organisms for the soil

Multiple Choice

How do decomposers benefit the carbon cycle?

• Dead organic matter is broken down and nitrogen is released into the air.
• Carbon is leaked into the air when fossil fuels are burned.
• Decaying organisms are essential for carbon to be released back into the food web.
• Volcanoes and fires vent large amounts of carbon dioxide into the sky.

Multiple Choice

What would happen to waste and dead organisms in a world with no decomposers?

• They would decompose quickly

• They would pile up

• They would turn into energy

• They would disappear

Multiple Choice

What is a predator?

• An animal that eats plants

• An animal that eats another animal

• An animal that is eaten by others

• An animal that lives in water

Multiple Choice

Which of the following best describes a predator in a forest ecosystem?

• An animal that is hunted and eaten by another animal in the forest.

• An animal that hunts and eats other animals in the forest.

• An organism in the forest that produces its own food.

• An organism in the forest that breaks down dead matter.

Multiple Choice

What is the primary source of energy for nearly all ecosystems?

• Geothermal heat

• The Sun

• Wind

• Hydroelectric power

Multiple Choice

What would most likely happen if an ecosystem no longer received sunlight?

• The number of herbivores would increase

• The number of plants would increase

• all organisms would adapt

• All living organisms would eventually die

Reorder

Put this food chain in the correct order

• Grass

• Rabbit

• Snake

• Hawk

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

The diagram below is an example of _______________

• Food Web
• Food Chain
• Food Pyramid
• Food Buffet

Multiple Choice

What is the correct order of the food chain?

• Sun, Producers, 1st Level Consumers, 2nd Level Consumers, 3rd Level Consumers, Decomposer

• Producers, Sun, 1st Level Consumers, 2nd Level Consumers, 3rd Level Consumers, Decomposer

• 1st Level Consumers, Sun, Producers, 2nd Level Consumers, 3rd Level Consumers, Decomposer

• Decomposer, 3rd Level Consumers, 2nd Level Consumers, 1st Level Consumers, Producers, Sun

Multiple Choice

Which best describes what a food chain shows you?

• Energy flow through an ecosystem
• Food flowing through an ecosystem
• Consumers going into other consumers
• Who eats who

Multiple Choice

What distinguishes a food web from a food chain in ecological studies?

• A food web consists of only one linear path, while a food chain involves multiple paths.

• A food web shows complex interconnections between organisms, while a food chain shows simple, direct feeding relationships.

• A food chain is used only in marine ecosystems, while a food web is used in terrestrial ecosystems.

• There is no difference; both models are used interchangeably.

Multiple Choice

Look at the desert food web.

What organism will possibly die out if the feather grass were removed from the desert?

• Jackrabbit

• Grasshopper

• Desert tortoise

• Desert fox

Multiple Choice

All food webs begin with producers.

• true

• false

Multiple Choice

Grass is an example of...

• a producer

• a consumer

• a decomposer

Multiple Choice

In a food chain/web, the arrow points...

• into the mouth of the organism that is doing the consuming

• toward the organism that is being eaten

Multiple Choice

If the grasshopper were to be removed completely from the food web, what organism would be most effected?

• The squirrel
• The shrew
• The deer
• The rabbit

Multiple Choice

What happens if we remove an organism from a food web?

• The food web remains unchanged.

• The balance of the food web is thrown off.

• Only one organism is affected.

• All organisms are destroyed.

Multiple Choice

What happens to most of the energy that is not passed from one trophic level to the next?

• It is returned to the plant population

• It is used to convert CO₂ into sugars

• It is lost to the environment as heat

• It transforms into X-ray radiation

Multiple Choice

Why does the amount of matter decrease with each trophic level?

• It is directly tied to the available energy

• It is lost to the environment as heat

• The matter is converted into energy

• It is converted into glucose and oxygen

Multiple Choice

What happens to the energy obtained by an organism when it eats?

• It is fully transferred to the next organism

• It is used for growth and movement

• It is stored indefinitely

• It is lost completely

Multiple Choice

What is the purpose of the energy pyramid?

• To show the amount of energy that moves from one feeding level to another in a food web

• To illustrate the food chain

• To represent the population of different species

• To demonstrate energy conservation