Organism Interactions
Symbiosis
Levels of Ecological Organization
Biomes
Limiting Factors
100

Organisms working together is called...

Cooperation

100
Symbol for Mutualism

+ +

100
The smallest unit of an ecosystem - a single living thing

Organism

100

A biome is a type of ...

Ecosystem

100

A limiting factor is something that _____________ a population.

Decreases

200

Organisms fighting over limited resources is called ...

Competition

200

Symbol for commensalism

+ O

200

Different groups of different kinds of organisms living in the same area together.

Community

200

There are 2 kinds of biomes. What are they? ...

Terrestrial and Aquatic

200

List at least 2 examples of a limiting factor.

Could include: no food, no water, no shelter, bad weather conditions, pollutions, habitat destruction, deforestation, etc.

300
One organism hunting and killing another is called...

Predation

300
Parsitism is when one organism is helped and the other is ...

Harmed

300

A group of the same species of organism.

Population

300

Which is the largest biome on Earth?

Marine (ocean)

300

True/False: a limiting factor determines how big a population can get.

True

400

Meerkats send one of their pack to stand on a tall place to look out for predators and warn its fellow pack-members of danger. This is an example of ...

Cooperation

400

The cattle egret (bird) stands on the backs of large animals. This helps the bird to see and hunt better. The large animals don't really notice the birds. This is an example of ...

Commensalim

400
A field containing rabbits, deer, mice, air, water, and clouds would be a(n)...

Ecosystem

400

Which biome contains the most different kinds of species on Earth?

Tropical rainforest

400
In Yellowstone National Park when wolves were reintroduced to the ecosystem, they reduced the amount of deer in the park. This was good, because the deer had been eating all of the grass. What was the major limiting factor in this scenario for the deer?

Wolves

500
When a male lion that is not part of the pride wanders into another pride's space, the other lions attack it. Explain why.

Lions could be competing over territory or protecting mates.

500
Mistletoe grows on trees and sends sharp roots down through the tree bark to feed on the tree's sap. This helps the mistletoe to grow, but trees with a lot of mistletoe can be weakened by it. This is an example of ...

Parasitism

500

A group of 10 people and 2 dogs together would be considered a ...

Community

500

List 4 abiotic factors that contribute to the creation of a new biome.

Could include: sunlight, rainfall, temperature, location, and/or salinity

500

In Yellowstone National Park when wolves were reintroduced to the ecosystem, they reduced the amount of deer in the park. This was good, because the deer had been eating all of the grass. What was the major limiting factor in this scenario for the grass?

Deer
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