Quiz about ENERGY FLOW REVIEW 2025

Question 1

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

Accepted Answer

90%

Answer

80%

Answer

10%

Answer

20%

Question 2

If there is 3500 Kcal available in trophic level 1, how much energy is available in trophic level 2?

Accepted Answer

350 Kcal

Answer

35000 Kcal

Answer

35 Kcal

Answer

0.35 Kcal

Question 3

What does the graph represent?

Accepted Answer

Exponential growth

Answer

Emigration

Answer

Immigration

Answer

Logistic Growth

Question 4

What level consumer could you consider the deer?

Accepted Answer

Primary

Answer

Secondary

Answer

Tertiary

Answer

Quarternary

Question 5

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

Accepted Answer

There would be a decrease in the grass/flowers population.

Answer

There would be a decrease in the small bird population.

Answer

There would be a decrease in the mice population.

Answer

There would be an increase in the grass/flowers population.

Question 6

Which of the following are density dependent factors?

Accepted Answer

competition for resources

Accepted Answer

predation

Accepted Answer

disease

Answer

natural disasters

Question 7

Which of the following are examples of a density independent factors?

Accepted Answer

forest fire

Accepted Answer

seasonal cycles

Accepted Answer

storms

Answer

disease

Question 8

According to the food web, which food chain is correct?

Accepted Answer

Plankton- krill- squid

Answer

plankton-penguin-krill- squid

Answer

plankton-blue whale- seagull- squid

Answer

plankton- krill- seagull- squid

Question 9

An ecosystem is a community of organisms interacting with their physical environment. Why are decomposers an important part of ecosystems?

Accepted Answer

They break down dead organisms to return nutrients to the soil.

Answer

They produce their own food for survival.

Answer

They play a role in preventing weathering and erosion.

Answer

They provide most of the energy to consumers.

Question 10

A symbiotic relationship where one organism (the parasite) benefits from and hurts another (the host).

Usually the parasite is getting food from the hosts body.

Accepted Answer

Parasitism

Answer

Commensalism

Answer

Mutualism

Answer

Competition

Question 11

A symbiotic relationship that benefits both members of two different species.

Accepted Answer

Mutualism

Answer

Predator-Pray

Answer

Commensalism

Answer

Parasitism

Question 12

A symbiotic relationship where one species obtains food or benefits from another species without benefitting or harming the other.

Accepted Answer

Commensalism

Answer

Mutualism

Answer

Competition

Answer

Parasitism

Question 13

Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed.

Accepted Answer

parasitism

Answer

commensalism

Answer

mutualism

Question 14

relationship in which two species live closely together

Accepted Answer

symbiosis

Answer

resource

Answer

mutualism

Answer

succession

Question 15

A mite lives in the base of the eyelashes of people who use mascara. It feeds on the mascara; it does not seem to harm people. What type of symbiotic relationship is this?

Accepted Answer

commensalism

Answer

mutualism

Answer

parasitism

Answer

predation

Question 16

What type of symbiosis?  Skunks often live in burrows that have been dug and abandoned by woodchucks.

Accepted Answer

commensalism

Answer

mutualism

Answer

parasitism

Answer

predation

Question 17

Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this?

Accepted Answer

Commensalism

Answer

Mutualism

Answer

Parasitism

Answer

Neutralism

Question 18

symbiotic relationship in which both organisms benefit

Accepted Answer

Mutualism

Answer

competition

Answer

nitrogen fixation

Answer

energy pyramid

Question 19

Which list describes the types of relationships the sunfish has with other marine organisms?

Accepted Answer

Seabirds: mutualism

Jellyfish: predation

Copepods: parasitism

Answer

Seabirds: parasitism

Jellyfish: commensalism

Copepods: predation

Answer

Seabirds: predation

Jellyfish: mutualism

Copepods: commensalism

Answer

Seabirds: commensalism

Jellyfish: parasitism

Copepods: mutualism

Question 20

Another term for consumer

Accepted Answer

Heterotroph

Answer

Autotroph

Question 21

The consumers that are the top carnivores that eat other carnivores

Accepted Answer

Tertiary

Answer

Secondary

Answer

Primary

Question 22

Which level will contain plants?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 23

The diagram represents a simple food chain. The arrows in the diagram indicate the

Accepted Answer

direction of energy flow through a series of organisms

Answer

return of chemical substances to the environment

Answer

order of importance of the various organisms.

Answer

direction in which organisms move in the environment.

Question 24

A company has purchased 15,000 acres of forest. The loggers harvest mature trees in order to supply lumber for new homes. According to the graph, the Spotted Owl and the Hawk populations are the most negatively affected organisms. What would be the most likely explanation of why this has occurred?

Accepted Answer

The owl and hawk populations have dropped because the logging has removed the places they used for their nests.

Answer

The Owl and Hawk numbers have dropped because the logging has depleted their food source.

Answer

The owl and hawk populations have dropped because of the pollution from the logging equipment.

Answer

The owl and hawk populations have dropped because they have been scared away by the presence of humans.

Question 25

What does a food web represent?

Accepted Answer

All connections of energy flow throughout all organisms in a habitat.

Answer

The specific ways that mutualism is carried out.

Answer

A single pathway or energy flow between organisms.

Answer

How carnivores get their food.

Question 26

How much energy is passed on to each trophic level in an energy pyramid?

Accepted Answer

10%

Answer

90%

Answer

50%

Answer

80%

Question 27

What is the 10% rule?

Accepted Answer

The 10% rule states that only 10% of energy is transferred from one trophic level to the next in a food chain.

Answer

The 10% rule states that 10% of a population can survive in extreme conditions.

Answer

The 10% rule indicates that 10% of resources are allocated to the top management.

Answer

The 10% rule suggests that only 10% of species can coexist in an ecosystem.

Question 28

If the producer level has 15,000 units of energy available in it, how many units will the primary consumers have?

Accepted Answer

1,500

Answer

15

Answer

150

Answer

15,000

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