Vocabulary
Lesson 1
Lesson 2
Lesson 3
Mystery
50
An animal that eats only meat is a ___________.
carnivore
50
What is the source of energy for plants?
a. food webs
b. prey
c. producers
d. sunlight
d. sunlight
50
What is the main purpose of this diagram?
A. To show what eats what
B. To outline an ecosystem
C. To show that producers make their own food
D. To show that the amount of energy that passes from one level to the next becomes less
J. To show that the amount of energy that passes from one level to the next becomes less
50
What can cause an increase in herbivores?
A. An increase in predators
B. A decrease in prey
C. An increase in producers
D. An increase in carnivores
C. An increase in producers
50
A cow is both a consumer and a _______.
Herbivore
150
Carnivores and omnivores are both _________.
consumers
150
How can energy pass from a wheat plant to a wolf?
A. Through a carnivore
B. Through a herbivore
D. Through a predator
E. Through a producer
B. Through a herbivore
150
What living thing is most often at the beginning of a food chain?
A producer
150
Which of these can cause a change in a food web?
A. Animals that protect themselves by running fast
B. Animals that blend in with their surroundings
C. Animals that are new to the ecosystem
D. Animals that live in herds
C. Animals that are new to the ecosystem
150
A turtle is chewing on weeds growing beside a pond, and it snaps up a dragonfly that gets too close. Which group of consumers can you infer that turtle belongs to? Why?
The turtle is an omnivore because it eats both insects and plants.
200
Food moves from one living thing to another in a path called a __________.
food chain
200
What are most people?
A. Carnivores
B. Herbivores
C. Omnivores
D. Producers
C. Omnivores
200
What happens to the energy in a seed after a bird eats it?
The bird gets the energy that is stored in the seed.
200
Which of these is least likely to get eaten in a food web?
A. Herbivore
B. Predator
C. Prey
D. Producer
B. Predator
200
In what way does a wolf depend on plants for energy?
A wolf does not eat plants, but most of the animals it eats, such as rabbits, do eat plants. Without plants, the wolf would have no animals to eat.
250
The overlapping paths of food are shown by a _______.
food web
250
Which of these does not happen?
A. Plants become food
B. A predator becomes prey
C. An omnivore eats meat
D. A carnivore eats plants
D. A carnivore eats plants
250
A medium-sized fish is a predator. What could happen next to make that fish become prey?
A large fish migh teat the medium-size fish. Then the medium-size fish would be prey.
250
Name two food chains in this food web
marsh grass — grasshopper — shrew—hawk
cattail — cricket — frog — snake — hawk
marsh grass — grasshopper — shrew — snake — hawk
cattail — cricket — shrew — hawk
250
What are three ways animals defend themselves?
By blending in with their surroundings, by biting, by spraying a bad smell, by playing dead, by living in herds, and by running fast
300
The only living things that can make their own food are __________.
producers
300
Is this grizzly bear a carnivore or an omnivore?
Omnivore
300
What does this food web show?
Some producers are eaten by several consumers. Some consumers are eaten by several other consumers.
300
What can you infer about the shape of an animal’s teeth and the kind of food it eats?
Animals have different teeth shapes, so they can eat different foods. Most meat eaters use sharp teeth. Most plant eaters use flat teeth.
350
A cheetah is a consumer, a carnivore, and a _________.
predator
350
Observe the pictures above. What can you infer about the shape of an animal’s feet and the kind of food it eats?
The hawk needs sharp claws to catch its food. The rabbit and the horse do not need to catch their food because they eat plants.
350
Name two things that can change a food web
An increase or decrease in the food supply or the introduction of a new plant or animal can change a food web.
350
What would happen to food webs if thick clouds from a volcanic eruption hid the sun for a year?
The clouds of ash would keep sunlight from reaching the plants. Plants would die, followed by the herbivores. Then carnivores and omnivores would starve.
400
Dead plants and animals are broken down by ______.
decomposes
400
Every night, you observe an owl catching mice. Explain how the owl gets energy that came from the sun, even though it hides in the dark shadows during the day.
The mouse has eaten plants. The plants got energy form the sun. When the owl eats the mouse, it gets the energy from the sunlight.
400
What is the difference between a food web and an energy pyramid?
A food web shows animals eat more than one thing and get eaten by more than one thing. An energy pyramid shows how energy is passed through a food chain.
400
How would your life change if you were only part of one food chain?
You would have only one thing to eat.