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Decomposer and Ecology

Total questions: 17

Worksheet time: 10mins

Name
Class
Date
1.
In an ecological pyramid, which type of organism always has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
2.
How much of the energy in each level of a ecological pyramid gets lost as heat or used by the organism so that it cannot be passed on to the next trophic level?
a)
80%
b)
90%
c)
10%
d)
20%
3.

For lots of different living things, waste is actually a good source of ___

a)

Shelter

b)

energy

4.

Which organisms keep waste from piling up in an ecosystem?

a)

decomposers

b)

plants

5.
What role do decomposers play in an ecosystem?
a)
Produce food
b)
recycle matter
c)
provide oxygen
d)
supply water
6.
Which is the correct sequence to show how organisms live in an environment?
a)
decomposer-->consumer-->producer
b)
consumer-->decomposer-->producer
c)
producer-->decomposer-->consumer
d)
producer-->consumer-->decomposer
7.

Decomposers release chemicals to break down the food.

a)

True

b)

False

8.
A mushroom is a 
a)
producer
b)
consumer
c)
decomposer
9.
A dragonfly is a 
a)
producer
b)
consumer 
c)
decomposer
10.

An organism that is killed and eaten by another organism.

a)

consumer

b)

decomposer

c)

prey

d)

host

11.

The non-living parts of an ecosystem.

a)

ecology

b)

abiotic

c)

predator

d)

biotic

12.

A carnivore that feeds on the bodies of dead organisms.

a)

predator

b)

carnivore

c)

scavenger

d)

omnivore

13.

A community of living organisms called producers, consumers, and decomposers. These biotic and abiotic components are regarded as linked together.

a)

scavenger

b)

herbivore

c)

food web

d)

ecosystem

14.
If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?
a)
It will increase.
b)
It will decrease.
c)
It will stay the same.
d)
It will fluctuate.
15.
What type of growth is shown in the diagram?
a)
exponential growth
b)
logistic growth 
c)
predator-prey cycle
d)
boom-bust curve
16.
What type of growth curve is pictured?
a)
exponential 
b)
logistic
c)
predator-prey
d)
invasive
17.

Health and disease can determine a population's

a)

life or death

b)

hopes and dreams

c)

happiness or discontent

d)

religious beliefs or politics

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