Grade 6 Ecology Unit Review Question Preview (ID: 23280)

Review For End Of The Unit Assessment.

Where do plants get the energy from to make food?
a) sun
b) animals
c) metamorphosis
d) producers

Which of the following is an example of an abiotic factor?
a) plants
b) temperature
c) animals
d) bacteria

Which statement best explains why populations will decrease once they have gone over carrying capacity?
a) the animals in the population are over-hunted by predators
b) over time, the animals can not adapt to changes in their environment
c) resources in an area are unlimited and do not limit the growth of a population
d) Resources such as food, water, and shelter limit the growth of a population

What important role do decomposers provide for the ecosystem?
a) Decomposers turn sun energy into food energy
b) Decomposers break down materials that can be used by other organisms
c) Decomposers consume the sun's energy
d) Decomposers have no specific role in the ecosystem

Which level of the pyramid supports the least number of organisms
a) producers
b) first-level consumers
c) second-level consumers
d) third-level consumers

Ecology is
a) the study of all living things except humans
b) the study of pollution
c) the study of how living things interact with each other and their environment
d) protecting the environment

2. What is the difference between a biotic factor and an abiotic factor?
a) Biotic factors exist in an ecosystem, but abiotic factors do not.
b) Biotic factors include elements like weather and temperature, while abiotic factors produce carbon dioxide and oxygen
c) Biotic factors are living things and abiotic factors are non-living things.
d) Biotic factors are non-living things and abiotic factors are living things.

Which of the following are biotic factors in an ecosystem?
a) rain, sunlight, and plants
b) plants, animals, and bacteria
c) temperature, animals, and plants
d) animals, minerals in the soil, and rain

A group of owls living in the same area and competing for resources is called a
a) habitat
b) population
c) species
d) community

Which factor would most directly impact the frog population in a pond ecosystem?
a) dragonfly population
b) amount of sunlight
c) rabbit population
d) deer population

Which of the following is not a limiting factor for populations?
a) space
b) water
c) weather
d) time

The first organism in a food chain is always a(n)
a) consumer
b) decomposer
c) producer
d) scavenger

The interaction of all of the different populations is a(n)
a) environment
b) organism
c) population
d) community

The source of all energy for a food web is
a) a producer
b) the sun
c) a consumer
d) a scavenger

As you move up the energy pyramid, the amount of available energy
a) remains the same
b) increases
c) decreases
d) is destroyed

Which is a carnivore?
a) grass
b) spider
c) bear
d) deer

Which of the following roles do bacteria and fungi play in an ecosystem?
a) producer
b) consumer
c) scavenger
d) decomposer

The level of an energy pyramid with the least energy available is
a) third-level consumers
b) second-level consumers
c) first-level consumers
d) producers

Fish are an example of which factor in a pond environment
a) abiotic
b) biome
c) producer
d) biotic

Which statement BEST describes the carrying capacity of an area?
a) The largest population an area can support.
b) The average population an area can support.
c) The small population an area can support.
d) The total population an area can support.

Play Games with the Questions above at
To play games using the questions from above, visit and enter game ID number: 23280 in the upper right hand corner or click here.

Log In
| Sign Up / Register