WorksheetsEcosystem: Interactions, Energy, and Dynamics
Total questions: 21
Worksheet time: 24mins
Which type of symbiosis involves both species benefitting? +/+
Mutualism
Commensalism
Parasitism
Which type of symbiosis involves one species benefitting while the other is harmed? +/-
Mutualism
Commensalism
Parasitism
Which type of symbiosis involves one species benefitting while the other is unaffected? +/0
Mutualism
Commensalism
Parasitism
Which of the following is NOT a threat to biodiversity?
Overhunting
Invasive species
Water purification
All of the different species of living things in a given area is called:
Population
Community
Ecosystem
biome
Coyote populations have been increasing in recent years. Which would not be a reason for their increase?
More food is available
Less competition from other predators
Less available habitat to live in.
Less threat of being hunted by humans
If the populations of grasshoppers would decrease, what affect would that have on the population of lizards?
Increase
Stay the same
Decrease
Unable to determine
If the population of rattlesnakes were to decrease, why would that help to increase the population of hawks?
Rattlesnakes eat hawks
Hawks eat rattlesnakes
Rattlesnakes and hawks both eat kangaroo rats.
It would not help the hawk population.
Rats were introduced to Australia and the rat population exploded over several years. Which would not be a reason for their population growing?
Large amounts of available food
Increase in the number of predators.
More water available
Large habitats to live in
Which is an abiotic factor that influences the population of the rats?
The amount of food available
The amount of water available
The number of predators available
The amount of competition in the ecosystem
Which would be a limiting factor on the rats
The availability of food.
The number of predators
The availability of abiotic resources
All are limiting factors.
What is the original source of energy for this ecosystem?
Plants
Animals
Air
Sun
Both the lion and the cheetah eat some of the same prey in this ecosystem. Two organisms going after the same resource is known as
Mutualism
Parasitism
Competition
Commensalism
What niche do the bacteria have that return the nutrients of dead and decaying matter back to the ecosystem
Producer
Primary Consumer
Secondary Consumer
Decomposer
In the woods, there are hawks and robins. They both try to occupy the same niche by competing for worms as the only source of food in that same area at that same time. The hawks outcompete the robins, and the robins are forced to leave that area. This is an example of:
Mutualism
The competitive exclusion principle
Commensalism
Neutralism
Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this?
Mutualism
Commensalism
Parasitism
Amensalism
In this photo, two lions are fighting for a resource. What type of competition is this?
Interspecific competition
Intraspecific competition
Machismo
Competitive exclusion principle
A community consists of all the organisms in an ecosystem that belong to the same species.
True
False
What is the difference between a population and a community?
A population is made up of all species in an area. A community is made up only of one species.
A population is made up of only one species. A community is made up of all species in an area.
A population is made up of all the species and nonliving things in an area. A community is made up of all species in an area.
The words mean the same thing.
What is the difference between a community and an ecosystem?
An ecosystem consists of living and nonliving things in an area. A community is all the members of one species in the area.
An ecosystem consists of living and nonliving things in an area. A community is all the populations in the area.
An ecosystem consists of nonliving things in an area. A community is all the living things in the area.
An ecosystem consists of all the populations in an area. A community is all the nonliving things in the area.
