Ecosystems
Limiting Factors & Optimum Zones of Stress
Trophic Relationships
Random
Vocabulary
100
Explain the difference between abiotic and biotic factors
Biotic = living Abiotic = non-living
100
How many limiting factors need to be beyond a plants limit of tolerance to stop its growth?
One
100
What is the name for the major feeding relationships between organisms.
Trophic Structure
100
Provide an example of a mutualistic relationship.
Bee and Flower
100
A relationship that provides a mutual benefit to both species.
What is mutualism
200
What is the major biome of the central United States.
grassland
200
List three natural physical barriers that prevent the spreading of species into other ecosystems.
Ocean Lakes Rivers Canyons Deserts Mountain Ranges
200
What are three major categories of organisms.
1.Producers 2.Consumers 3.Detritus Feeders
200
Producers include all plants that do what?
Carry on photosynthesis.
200
Two organisms that are living together in a close union.
What is symbiosis
300
A biotic community consists of: 1. _________________ communities 2. _________________ communities 3. _________________ communities
Plants Animals Microbes
300
List three physical barriers created by humans that prevent the spreading of species into different ecosystems.
Dams Roadways Cities
300
How is biomass determined?
The total dry weight of all organisms occupying a trophic level.
300
What type of consumers can be classified in both the 2nd and 3rd trophic levels?
What is omnivore
300
A factor that limits the growth of an organism.
What is a limiting factor
400
All creatures on earth and the environments they live in constitute one huge ecosystem call the ______________
Biosphere
400
(Vocab Term) The entire span that allows any growth at all is called the _________________.
What is range of tolerance
400
Draw and label a diagram of the biomass relationship for the three trophic levels.
3. Carnivores 2. Herbivores 1. Producers
400
About what percent of the energy is transferred from one trophic level to the next.
10%
400
The description of the average temperature and precipitation of a region.
What is climate
500
List six examples of major kinds of ecosystems.
1. Desert 2. Grassland 3. Tropical Rain Forest 4. Ocean 5. Tundra 6. Temperate Forest
500
Label the following terms on the diagram. 1. Optimum 2. Range of tolerance 3. Limits of tolerance 4. Zones of stress
See diagram
500
Draw and identify 1 organism that can be found at each of the three trophic levels.
1. Plants 2. Herbivore or Omnivore 3. Carnivore or Omnivore
500
List three ways humans have overcome limiting factors.
1. Producing abundant food 2. Creating reservoirs and distributing waste 3. Overcoming predation and disease 4. Constructing our own habitats 5. Overcoming competition with other species
500
Refers to what a animal feeds on, where it feeds, when it feeds, where it finds shelter, and how it responds to abiotic factors.
What is Niche
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