Ecology: Question Preview (ID: 19424)


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A symbiotic relationship in which both organisms benefit.
a) commensalism
b) mutualism
c) symbiosis
d)

What is the organic material found in soil known as?
a) topsoil
b) parent material
c) bedrock
d) humus

There are 4 different types of soil material. What is the correct order in grain size from smallest to largest?
a) clay, silt, sand, gravel
b) gravel, silt, clay, sand
c) clay, sand, silt, gravel
d) silt, clay, sand, gravel

A symbiotic relationship in which one organism (parasite) benefits at the expense of the other (host).
a) mutulalism
b) parasitism
c) commensalism
d)

Which of the following is an example of a biotic factor?
a) Sunlight
b) Soil
c) A dead frog
d) Erosion

Which of the following is an ecosystem?
a) All the populations of species that live in the same habitat and interact with each other
b) A community of organisms and their abiotic environment
c) An area where organisms live, or habitat
d) Living features in the environment

Which organism is a decomposer?
a) Ant
b) Chipmunk
c) Pine tree
d) Bacteria

A relationship that exist between organisms of two different species that live together in direct contact.
a) symbiosis
b) competition
c) mutulalism
d)

A relationship that occurs when two or more organisms need the same resource at the same time.
a) symbiosis
b) competition
c) parasitism
d) Aluminum

Nonliving part of the environment is called ____________?
a) Abiotic Factors
b) Biotic Factors
c)
d)

What is the ability of water to pass through soil particles called?
a) Acidity
b) Permeability
c) Weathering
d) Erosion

Living or once living organisms in an environment are called ______________?
a) Abiotic Factors
b) Biotic Factors
c)
d)

The individual living organism.
a) Species
b) Population
c) Ecosystem
d) Biome

All of the different populations in a specific area or region at a certain time.
a) Species
b) Population
c) Community
d) Ecosystem

One or more communities in an area and the abiotic factors, including water, sunlight, oxygen, temperature, and soil in an ecosystem.
a) Species
b) Population
c) Community
d) Ecosystem

Which of the following is an abiotic factor?
a) Grass
b) Oak tree
c) Soil
d) Bacteria

What is the type of organism that breaks down the cells of dead organisms?
a) Decomposer
b) Consumer
c) Producer
d) Omnivore

Which level consist of the individuals of a given species in a specific area or region at a certain time?
a) Species
b) Population
c) Ecosystem
d) Biomes

Which of the following is an abiotic factor that most organisms need to survive?
a) Air
b) Rocks
c) Grass
d) Niche

Which of the following is a biotic factor?
a) Water
b) A rotting log
c) Temperature
d) Sunlight

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