6 Levels of Biological Organization
Roles in an Ecosystem
Food Webs Etc.
Succession
Cycles

100

This is all of the biological populations in a given area.
What is a biological community?

100

This role is played mostly by plants. They generate their own food from the sun's energy.
What is a producer?

100

The arrows in a food web and food chain show this.
What is energy flow?

100

The process of succession can be described as going at this speed.
What is very slow?

100

This is the process by which water runs over the land towards a body of water.
What is run-off?

200

This is a group of individuals of a given species.
What is a biological population?

200

This is the name of the organism at the very zenith of the food pyramid
What is a top carnivore?

200

This is the total mass of organisms in an ecosystem.
What is biomass?

200

Events that cause succession to go backwards in the cycle are called this.
What is a disturbance?

200

This is the process in which condensed water falls.
What is precipitation?

300

This is the name for all of the water in the biosphere.
What is the hydrosphere?

300

This is the word meaning the roles within an ecosystem.
What is a niche?

300

This model is good because it shows the number of animals needed at each trophic level.
What is a pyramid of numbers?

300

These are the types of plants that you see through secondary succession.
What are grasses, ferns, or flowering weeds?

300

Energy, Carbon Dioxide, and Water are the END PRODUCT of this process.
What is respiration?

400

These biomes are NOT found in Canada.
What are desert and tropical rainforest?

400

This is a symbiotic relationship in which one organism benefits and the other is hurt.
What is parasitism?

400

The widest part of a food pyramid consists of organisms fulfilling this role.
What are producers?

400

In the cycle of succession this stage is characterized by a high level of biodiversity.
What is a climax community?

400

These are the end products of photosynthesis.
What are food and oxygen?

500

The sun, air, water, and soil are examples of these.
What are abiotic features of an ecosystem?

500

Organisms in this role eat dead and rotting animals.
What is a scavenger?

500

This model of ecosystem interactions is good because it demonstrates how organisms are often eaten by more than one other organism. Animals often eat more than one food too.
What is a food web?

500

Plants that take root during primary succession are called this.
What are pioneer species?

500

This is the process in which water in a plant's leaves, stem, and flowers evaporates.
What is Transpiration?