Food Chains
Cause & Effect
Vocabulary
Resources
Relationships
200
According to the diagram above, these animals compete to eat grass.
What are grasshoppers, birds and prairie dogs?
200
An increase in a population of deer that eat only one species of grass will cause an increase or decrease in competition for that grass.
What is increase?
200
The specific environment in which an organism lives
What is an ecosystem?
200
When a large tree shades smaller plants and blocks sunlight, the plants are competing for this
What is sunlight?
200
Because a wolf in Yellowstone eats other animals and is not regularly eaten by any other animal, it is called this.
What is an apex predator or top predator?
400
According to the diagram above, these animals compete to eat prairies dogs.
What are vultures, coyotes and mountain lions?
400
If wolves, that prey on bison, are hunted more than usual would likely cause a decrease or increase in the bison population.
What is an increase?
400
Resources that control the size a population can reach
What are limiting factors or limited resources?
400
True or False - Grizzly Bears are in competition with eagles if they eat the same species of salmon.
What is True?
400
Plankton that use photosynthesis to create organic matter from sunlight are called phytoplankton. They would also play this role in the ecosystem.
What are producers?
600
According to the diagram above, these animals are predators of grasshoppers.
What are coyotes and birds?
600
To study the competition between two populations of animals, a student should make sure to choose animals that rely on the same or different resources.
What are the same resources?
600
Two or more members of the same species living in the same habitat
What is a population?
600
Elephants, giraffes, and antelope all gather at one critical place during droughts and may push others away. This is an example of them competing for this resource.
What is water?
600
English ivy is not native to DC and reproduces quickly so it is called this.
What is an invasive species?
800
According to the diagram above, the deer is a consumer of what two organisms?
What are grass and shrubs?
800
True or False: Competition can cause some species to leave an area.
What is true?
800
When competition occurs within a species it is called this.
What is Intraspecific Competition?
800
Cactus wrens and other small birds compete for shady parts of tall cacti to build their nests and stay cool. They are competing for this resource.
What is shelter?
800
A tick and a human have this kind of relationship in their ecosystem.
What is parasite and host?
1000
According to the diagram above, there are this number of apex predators.
What is three?
1000
If an invasive species moves into an area and eats the same food as native species, this effect might happen to the native species.
What is their population would decrease?
1000
When competition occurs between different species it is called this.
What is Interspecific Competition?
1000
Two fish live in a pond and eat the same food and are eaten by the same birds. If the water level was to drop in the pond would the competition among the fish decrease or increase.
What is increase?
1000
A yellow jacket bites a human when it thinks that it is going to be harmed. True or False - a yellow jacket is a parasite for humans.
What is False?