Producers
What has to happen to increase the flow of energy in an ecosystem?
Producers must increase.
How do consumers get their energy?
By eating other organisms.
What do decomposers make?
They make the soil fertile.
In the following food chain, which is the secondary consumer?
flower--butterfly--frog--eagle
frog
Fleas and mosquitos impact other organisms in the environments where they live. Which of the following does NOT identify a detrimental effect of fleas and mosquitos on other organisms?
A. Mosquitos can spread heartworm disease in dogs
B. Mosquitos are food for different animals such as bats
C. Mosquitos can carry diseases, such as West Nile Virus, malaria, and yellow fever which are passed to humans when they die.
D. Fleas can transmit diseases to humans and animals such as bubonic plague.
B. Mosquitos are food for different animals such as bats.
Where do producers get their energy?
Directly from the sun.
What can consumers NOT do?
Produce their own food.
How do mushrooms obtain their food in an ecosystem?
a. by trapping sunlight
B. by eating small herbs
C. by feeding on small insects
D. by breaking down dead leaves
D. by breaking down dead leaves.
What types of organisms do tertiary consumers eat?
predators
Which of the following sentences describes a mutualistic relationship?
A. Both organisms in a relationship benefit from each other.
B. One organism in the relationship benefits and the other is harmed.
C. One organism in the relationship benefits and the other is unaffected.
D. One organism in the relationship is killed and eaten by the other.
A. both organisms in the relationship benefit from each other.
What process do plants use to change energy from the sun into organic matter?
Photosynthesis.
Which of the following is NOT a consumer?
A. Dog
B. Insect
C. Hawk
D. Algae
D. Algae
True or false? Decomposers work better in cold, dry environments.
False
The population of cottontail rabbits in a forest has doubled. Because of this increase, which of the following changes is most likely to occur in the ecosystem?
A. There will be an increase in populations of other small herbivores in the ecosystem.
B. There will be an increase in populations of predators in the ecosystem.
C. There will be an increase in populations of rabbits for at least five more years.
D. There will be an increase in populations of producers in the ecosystem.
B. There will be an increase in populations of predators in the ecosystems.
Which abiotic factor do the fish depend on to survive in the pond?
A. aquatic plants
B. dissolved oxygen
C. smaller fish
D. fish-eating birds
B. Dissolved oxygen
What do producers provide to ecosystems?
Energy and oxygen.
What type of consumer only eats meat?
Carnivore
John wanted to plant a garden so he started digging in his yard. Which of the following organisms that he saw while digging would let him know that his soil is high in organic matter?
A. rabbits
B. spiders
C. slugs
D. earthworms
D. Earthworms
Sun--Grass--Grasshopper--Toad--Snake--Hawk
A. The sun is a producer
B. The hawk is a producer.
C. The grass is a consumer.
D. The snake is a consumer.
D. The snake is a consumer.
Which of the following is an example of mutualism?
A. A lion chases away hyenas from its kill
B. A group of seedlings bend towards light
C. A bat feeds from a hummingbird feeder.
D. A bat pollinates the flower it is feeding from.
D. A bat pollinates the flower it is feeding from.
A prairie ecosystem has experienced a drought that has lasted for an entire growing season. Which of the following organisms affected by such a change are at the base level of the food chain?
A. large carnivores, such as coyotes and mountain lions
B. producers, such as grasses and wild flowers
C. Herbivores, such as rabbits and gophers
D. small carnivores, such as insect eating birds
What type of consumer eats both plants and meat?
Ominivore
What do decomposers make for producers?
They nutrients for plants.
What does a food web show?
A. the number of calories in different kinds of foods
B. what types of foods we should eat
C. the abiotic factors in an ecosystem
D. the feeding relationship among organisms
D. The feeding relationship among organisms
Which is an example of a population?
A. all of the birds that live in the forest
B. all of the organisms that live in a desert
C. all of the animals that live in and around a pond
D. all of the white-tailed deer that live in a forest.
D. all of the white-tailed deer that live in a forest.