7.12 Ecosystems

Unit 9 Review: Ecosystems

By Rebecca Smith

Multiple Select

An orgnanism can belong to more than one trophic level.

What trophic levels does the Trout belong to in this food web?

• 1st Trophic Level: Producer

• 2nd Trophic Level: Primary Consumer

• 3rd Trophic Level: Secondary Consumer

• 4th Trophic Level: Tertiary Consumer

Multiple Choice

Which choice is the primary consumer in this food web?

• Dragon Fly

• King Fisher

• Freshwater Shrimp

• Trout

Multiple Choice

Why do you find fewer organisms at higher trophic levels?

• Due to less energy

• Due to more energy

• Incorrect, there are far more species found at higher trophic levels compared to lower levels

• Global warming

Multiple Choice

• Producer
• Primary Consumer
• Autotroph
• Decomposer

Multiple Choice

• Producer
• Primary Consumer
• Secondary Consumer
• Decomposer

Multiple Choice

• Producer
• Primary Consumer
• Secondary Consumer
• Decomposer

Multiple Choice

Which of the following is NOT a heterotroph?

• grass
• fungus
• shark
• sea urchin

Multiple Choice

What percentage of energy is passed on to each trophic level?

• 10%
• 50%
• 90%
• 100%

Multiple Choice

The arrows in a food chain or web represent ...

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show the direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

Multiple Choice

The owl and weasel compete for which organism?

• Hawk
• Spider
• Grasshopper
• Shrew

Multiple Choice

An animal that is hunted and eaten for food is the  __________.

• predator
• prey
• population

Multiple Choice

An organism that gets energy from eating other organisms is a ______________.

• producer
• consumer
• decomposer
• prey

Multiple Choice

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

• There would be a decrease in the small bird population.
• There would be a decrease in the grass/flowers population.
• There would be a decrease in the mice population.
• There would be an increase in the grass/flowers population.

Multiple Choice

Which of the following best describes the small bird in the food web above?

• primary and secondary consumer
• secondary, tertiary and quaternary consumer

• tertiary consumer only

• secondary consumer only

Multiple Choice

Why is some energy not passed on to the next trophic level?

• The organisms at each level use about 90% of the available energy to live.

• The statement is NOT true. All energy IS passed from one trophic level to the next.

• The organisms at each level use about 10% of the available energy to live.

• Most energy is absorbed by the soil instead.

Multiple Choice

Does this food web have arrows pointing the right way?

• Yes
• No

Multiple Choice

The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain organisms that can photosynthesize?

• A
• B
• C
• D

Multiple Choice

If there are 100 kcal of energy available in the producers, how much energy would be available to the herbivores?

• 10 Kcal
• 1 Kcal
• 100 Kcal
• 1000 Kcal

Multiple Choice

Which organism(s) in the food web above can be described as quaternary consumers?

• owl, mosquito and small bird

• mouse only
• mouse and owl

• owl only 

Multiple Choice

Which organisms have the most energy? 

• ladybugs
• plants
• owl
• mosquitoes

Multiple Choice

If these organisms were arranged in an ecological biomass pyramid, which organism would have the least amount of biomass?

• coyote
• insect
• lizard
• shrub

Multiple Choice

If the small bird on trophic level 3 in the pyramid has 50 kcal of energy available, how many kcal of energy were present in the trees?

• 5
• 500
• 5000
• 0.5

Multiple Choice

Which organisms would likely have the largest biomass?

• mountain lions and eagles
• snakes and frogs
• squirrels and deer
• flowers, trees and fruit

Multiple Choice

What would happen if the rat population rapidly decreased?

• the rabbit population would also decrease.

• the owl and rattlesnake populations would decrease.

• the owl population would increase.

• the wildcat would not have any food to eat.

Multiple Choice

How much energy is transferred from one organism to another?

• only 10%

• all of it, 100%

• only 50%

• 20%

Multiple Choice

Which of the following is NOT a producer in this food web?

• grass

• shrub

• fungi

• tree

Multiple Choice

Where is Thermal Energy converted to Chemical Energy

• Frog

• Snake

• Caterpillar

• Flower

Multiple Choice

What is NOT shown in the food chain?

• Herbivore

• Consumer

• Decomposer

• Producer

Multiple Choice

What do the arrows represent in the Food Chain?

• The direction of energy flow through organisms

• The order of the size of organisms

• The importance of an organism

• The energy increases as you move left to right

Multiple Choice

Grass --> Deer --> Wolves

The food Chain above is found in Yellowstone National Park. If a fire burned and killed all the Grass off which of the following is MOST LIKELY to happen after the grass is removed?

• The Wolves will increase, and the Deer will increase.

• The Wolves will decrease, and the Deer will decrease.

• The Wolves will decrease, and the Deer will increase.

• The Wolves will increase, and the Deer will decrease.

Multiple Choice

When energy is passing through a food web, some of the energy is lost as heat. Approximately how much of the energy is passed from one level to the next?

• 1%

• 5%

• 90%

• 10%

Multiple Choice

How many levels should you draw in an energy food pyramid?

• 2

• 5

• 1

• 4

Multiple Choice

Which organism provides the energy for the producers in this model?

• frogs

• corn

• none of them, the energy comes from the Sun

• Eagle

Multiple Choice

You ate steak and salad for dinner last night.

What does that make you?

• a herbivore

• a carnivore

• an omnivore

• a producer

Multiple Choice

What PRODUCER does every food chain START WITH?

• Water

• The sun

• Bugs

• Animals

Multiple Choice

Due to the fact that plants can make their own food using photosynthesis, what are plants considered in food chains?

• omnivores

• consumbers

• producers

• carnivores

Multiple Choice

What would a rabbit be considered in a food chain if it ONLY EATS PLANTS?

• herbivore

• omnivore

• carnivore

• producer

Multiple Choice

What would a lion be considered in a food chain if they ONLY EAT MEAT?

• producer

• herbivore

• carnivore

• omnivore

Multiple Choice

What would a human that eats BOTH PLANTS AND ANIMALS be considered in a food chain?

• herbivore

• carnivore

• producer

• omnivore

Multiple Choice

In a food chain, what breaks down dead material and helps turn it into nutrients in the soil?

• producers

• decomposers

• animals

• water

Multiple Choice

What is the MOST COMMON type of DECOMPOSER?

• mushrooms

• lions

• ants

• hawks

Multiple Choice

Which choice below shows the correct order of a food chain?

• sun -> rabbit -> tomato plant -. decomposer -> hawk

• tomato plant -> decomposer -> sun -> rabbit -> hawk

• sun -> tomato plant -> rabbit -> hawk -> decomposer

Multiple Choice

A diagram that shows how energy is transferred from one organism to another

• Carrying Capacity
• Producer
• Food Chain
• Balance of Nature

Multiple Choice

Organism that eats other organisms to get energy

• Producer
• Consumer
• Plant
• Food chain

Multiple Choice

A parrot eats fruit, seeds, and insects.  Which of the following terms best describes a parrot?

• Herbivore
• Carnivore
• Producer
• Omnivore

Multiple Choice

A field mouse eats grass and grass seeds.  Which of the following terms best describes a field mouse?

• Herbivore
• Producer
• Carnivore
• Decomposer

Multiple Choice

An alligator eats fish, turtles, ducks, and small mammals on the bank.  Which of the following terms best describes the alligator?

• Herbivore
• Carnivore
• Omnivore
• Producer

Multiple Choice

What is the producer in the picture above?

• grasshopper

• snake

• grass

• Sun

Multiple Choice

What is the producer in the picture above?

• grasshopper

• snake

• grass

• Sun

Multiple Choice

The model above is an example of a ...

• food chain

• food web

• habitat

• ecosystem

Multiple Choice

A model that shows one direct flow of energy from the Sun to decomposers in an ecosystem is called a

• food web

• food chain

• population

• community

Multiple Choice

Which organism provides the energy for the producers in this model?

• frogs

• corn

• none of them, the energy comes from the Sun

• Eagle

Multiple Choice

What living things make their own energy?

• Consumers
• Producers
• Decomposer
• Carnivores

Multiple Choice

The following list of things are producers.

• Bat, lion, and dog.
• Wal-Mart, Toys-R-Us, and Game Stop.
• Cashier, Salesman, and waiter
• Tree, grass, and flowers.

Multiple Choice

Which of the following would be the correct flow of energy? 

• Grass eats a rabbit, and then the rabbit eats a fox
• Fox eats a rabbit, and then the rabbit eats grass
• Rabbit eats grass, and then a fox  eats the rabbit

Multiple Choice

Which of the following is the definition for a food web?

• A system of interlocking and interdependent food chains.
• A system of different food
• A living thing that feeds on waste and remains of dead animals.
• Only eats meat.