Worksheets7.5 Ecosystem Review
Total questions: 13
Worksheet time: 4mins
Name
Class
Date
1.
Which of the following describes a population?
a)
85 great white sharks off Cape Cod
b)
A pair of mating seagulls migrating to an island
c)
Thousands of dolphins and whales around Hawaii
d)
Corals, sponges, algae, reef fish, lobsters, and giant clams
2.
Which of the following is a biotic factor?
a)
other predators
b)
water
c)
rainy weather
d)
holes in th ground
3.
Mushrooms are a good example of a…
a)
decomposer
b)
consumer
c)
producer
d)
autotroph
4.
Rain, hail, and snow are examples of
a)
precipitation
b)
evaporation
c)
condensation
d)
runoff
5.
As consumers break down food, what do they release?
a)
carbon dioxide
b)
sugar
c)
nitrogen
d)
oxygen
6.
Which part of the water cycle involves turning water from a liquid to a gas?
a)
evaporation
b)
condensation
c)
precipitation
d)
reduction
7.
Most of the fresh water on earth is found in
a)
ice
b)
the atmosphere
c)
lakes and rivers
d)
underground
8.
Which of the following activities does NOT release carbon dioxide?
a)
plants doing photosynthesis
b)
dead animals decaying
c)
eating a sandwitch and breaking it down
d)
driving a car
9.
Nitrogen is gathered from the atmosphere and "fixed" by
a)
bacteria
b)
animals
c)
plants
d)
decomposers
10.
As you move UP an energy pyramid, what happens to the amount of energy available?
a)
less energy is available
b)
more energy is available
c)
the same amount of energy is available
d)
energy could increase or decrease depending on what level you came from
11.
Choose ALL of the factors that would lead to the rabbit population decreasing.
a)
lots of plants die in a dry summer
b)
everyone starts getting dogs, which are predators of the rabbits
c)
a new disease infects the population
d)
many people start planting vegetable gardens
12.
Keagan's pond is covered 100% with a small green plant called duckweed. What is the limiting factor?
a)
space
b)
food to consume
c)
nutrients in the water
d)
predators
13.
Choose all of the ways that plants are involved in the carbon and oxygen cycles.
a)
photosynthesis
b)
respiration
c)
nitrogen fixation
d)
precipitation
100 %
