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WorksheetsWeb of Life Unit Review
Total questions: 25
Worksheet time: 44mins
What are the main ingredients plants use to make their own food?
water & soil
soil & oxygen
carbon dioxide & sunlight
water & carbon dioxide
Which of these organisms is NOT a decomposer?
fungi
mold
algae
earthworms
The energy in all ecosystems comes from the __________.
sun
consumer
oxygen level
producer
________________ are called "producers" because they make their own food.
Fungi
Plants
Animals
Organisms
Cougars, sharks and lions are all ______________.
carnivores
herbivores
decomposers
producers
Cows, squirrels and deer are all ________________.
decomposers
producers
carnivores
herbivores
Animals are examples of _________________.
producers
consumers
decomposers
Which correctly shows the flow of energy through a food web?
Decomposers → Consumers → Producers
Producers → Consumers → Decomposers
Producers → Decomposers →Consumers
Producers do which of the following things?
use carbon dioxide and release oxygen
make their own food rather than eating other living things
include plants and algae
all of the above
Decomposers can...
only be seen under a microscope.
break down waste and dead material into nutrients for plants.
create nutrients out of the air that help plants grow.
An ecosystem includes all the producers, consumers, and decomposers in an environment.
True
False
A _________________ is order in which organisms, or living things, depend on each other for food. It always begins with a producer.
food chain
ecosystem
food pyramid
food web
Organisms that break down dead or decaying organisms are called __________________.
producers
plants
herbivores
decomposers
Scientists think that Tyrannosaurus rex was able to run at a speed of 12 miles per hour. Where did T. rex get the energy that it used to run when it was alive?
T. rex got its energy from Triceratops. That energy is not connected to the Sun.
T. rex got its energy from green plants, which got their energy from the Sun.
T. rex got its energy directly from the Sun.
T. rex got its energy from eating Triceratops. Triceratops ate green plants and green plants got their energy from the Sun.
Scientists think that the dinosaurs went extinct because an asteroid hit the Earth and created a giant dust cloud that covered up the Sun. Diego doesn’t think this explanation makes sense. He says, “Some dinosaurs ate other dinosaurs to get their energy. Why would removing the Sun cause the carnivores to go extinct?” Explain to Diego why carnivores would go extinct without the Sun.
Carnivores would go extinct without the Sun because they get their energy from the Sun. Carnivores do not produce their own food or eat green plants, but the organisms that they eat get their energy from green plants. The energy can be traced back to the Sun.
Carnivores would not go extinct without the Sun because they get their don't energy from the Sun. Carnivores produce their own food and eat green plants. The energy can't be traced back to the Sun.
The energy in all ecosystems originally comes from:
Sunlight
Plants
Heat
Water
Amir released some pet frogs into the forest ecosystem shown above. These frogs eat earthworms and crickets. Hawks, robins, and squirrels do NOT eat these frogs. What will happen to this ecosystem if the frogs start living here? Choose all correct answers.
The dead leaves will pile up because the frogs will eat all the decomposers. The decomposers will not be there to eat the leaves.
The squirrels will not have anything to eat. They will need to find another food source or they will not survive.
The robins will not have anything to eat. They will need to find another food source or they will not survive.
The hawks will not have anything to eat. They will need to find another food source or they will not survive.
Ana wants to open a plant store, but she’s worried that it will cost too much money. Ana thinks that as plants grow, they use the material from the soil to get bigger. Potting soil costs a lot of money. Ana is worried she will need to buy a lot of soil to feed her plants. She decides to set up an experiment. Ana grows one plant in a pot for 3 weeks. She weighs the plant and the soil at the start and end of the experiment.
PLANT START: 300 grams END: 800 grams
SOIL START: 800 grams END: 800 grams
What did Ana find out with her experiment? Check all that apply.
The plant weighed the same at the start and end of the experiment.
The plant weighed more at the end of the experiment.
The soil weighed the same at the start and end of the experiment.
The soil weighed less at the end of the experiment.
PLANT A START: 300 grams END: 300 grams
PLANT B START: 300 grams END: 750 grams
Ana decides to do another experiment. She starts with two plants, Plant A and Plant B. Each plant weighs 300 grams. She attaches Plant A to a vacuum. The vacuum pumps all of the air out of the container around Plant A. Plant B is not attached to a vacuum, so it has air around it. Ana gives Plant A and Plant B the exact same amount of water. She runs the experiment for 3 weeks and then weighs the plants at the end of the experiment.
Looking at Ana’s experiments, what is a claim that you can make about plants and their growth?
Plants mostly use materials from the soil for their growth.
Plants mostly use materials from the air for their growth.
Plants mostly use materials from water for their growth.
Plants mostly use materials from sunlight for their growth.
What evidence do you have to support your claim from the question above? Provide an argument using evidence from Ana’s experiments to support your claim.
Plants do not use materials from the air for their growth. The first experiment showed that plants use soil for their growth. The second experiment showed that plants grow without air.
Plants mostly use materials from the air for their growth. The first experiment showed that plants do not use soil for their growth. The second experiment showed that plants do not grow without air.
What type of consumer eats only plants?
carnivore
herbivore
omnivore
producer
What type of consumer eats only animals(meat)?
carnivore
herbivore
omnivore
producer
What type of consumer eats both animals (meat) and plants?
carnivore
herbivore
omnivore
producer
An organism that makes its own food (green plants), is called a (a)
Which organisms add carbon dioxide to an ecosystem? (check all that apply)
animals
decomposers
plants
