Chapter 9, 7th Grade Question Preview (ID: 31090)

Interactions Of Living Things.[print questions]

T/F: Environmental changes can be slow or rapid.
a) True
b) False

How do humans contribute to the carbon cycle?
a) They breathe out carbon dioxide
b) They burn fossil fuels
c) When they decompose, the carbon is returned to the environment.
d) All of the above.

Producers make a food source called
a) glucose
b) stomata
c) chlorophyll
d) chloroplast

Plants release ___ as a waste product of photosynthesis.
a) carbon dioxide
b) oxygen
c) water vapor
d) nitrogen

When water vapor is released by plants, it is called
a) precipitation
b) condensation
c) evaporation
d) transpiration

What shows the amount of energy available at each step of a food chain?
a) food chain
b) food web
c) food pyramid
d) food cube

T/F: Each stage of a food chain has less available food energy than the last one.
a) True
b) False

Detritivores are organisms that eat
a) only producers
b) only consumers
c) both producers and consumers
d) dead plants and animals

Which organisms only eat other consumers?
a) herbivores
b) omnivores
c) carnivores
d) detritivores

The process in which organisms use chemicals to make food energy is called
a) photosynthesis
b) chemosynthesis
c) autosynthesis
d) hydrosynthesis

T/F: Energy returns to its source (or cycles) in an ecosystem.
a) True
b) False

The physical place where a population lives is called its
a) habitat
b) niche
c) population
d) hood

Which is an example of a parasitic relationship?
a) a clownfish and sea anemone
b) a bee and a flower
c) a flea and a dog
d) a barnacle and a sea turtle

Which is a limiting factor?
a) water
b) space
c) disease
d) all of the above

What can cause an increase in population size?
a) organisms dying
b) organisms moving into an area
c) organisms moving out of an area
d) none of the above

Which is NOT an abiotic factor?
a) air
b) water
c) pigeons
d) soil

Land biomes are called
a) terrestrial biomes
b) aquatic biomes
c) earthly biomes
d) surface biomes

The largest number of individuals of one species that an ecosystem can support over time is called
a) limiting factors
b) climax community
c) carrying capacity
d) threshold

A relationship in which two organisms benefit is called
a) mutualism
b) commensalism
c) parasitism
d) benefitism

Which organisms cannot make their own food and get energy by eating other organisms?
a) producers
b) consumers
c) chemosynthetic organisms
d) none of the above

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