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WorksheetsUnit 10 Processes of Living Systems
Total questions: 25
Worksheet time: 49mins
Name
Class
Date
1.
An area is covered by soil. It contains no living things. What can you conclude about succession in this area?
a)
It is undergoing secondary succession, because it is covered by soil.
b)
It has just completed primary succession, because it is rocky and bare.
c)
It cannot undergo succession, because it does not contain living things.
d)
It is in the last stages of succession, because it will soon be covered by grass.
2.
Which of the following natural events would most likely be associated with heavy rainfall or potential flooding?
a)
tornado
b)
thunderstorm
c)
earthquake
d)
volcanic eruption
3.
A drought has resulted in less available grass for grazing animals. Which of the following is NOT a likely response for the animal population?
a)
to find another food source
b)
to eat rabbits and other small animals
c)
to move to a different location
d)
to begin to die off
4.
Which of the following is the most biologically diverse land biome on Earth?
a)
a temperate diciduous forest
b)
a tropical rainforest
c)
a savanna
d)
a desert
5.
Which of the following actions poses a danger to biodiversity?
a)
protecting individual species
b)
protecting forests and wetlands
c)
preventing industrial wastes from being dumped in the ocean
d)
polluting a stream with used motor oil
6.
What process is occurring when a forest recovers from a natural disaster such as a fire or flood?
a)
primary succession
b)
combustion
c)
decomposition
d)
secondary succession
7.
How do pioneer species prepare an area for other living things?
a)
by replacing existing species
b)
by starting the process of succession
c)
by protecting other species from disease
d)
by stopping the process of succession
8.
An ecosystem experiences a volcanic eruption that covers the area with lava. Which of the following organisms is most likely to be a pioneer species in this ecosystem?
a)
a tall tree
b)
moss
c)
a shrub
d)
a mouse
9.
Which is the primary consumer?
a)
krill
b)
algae
c)
cod
d)
leopard seal
10.
The table shows data about organisms in different biomes. What conclusion can you draw from the data?
a)
Taigas are highly sustainable ecosystems.
b)
Deserts and tundras experience similar temperatures.
c)
Tropical rain forests have high biodiversity.
d)
Temperate biomes experience the same rates of precipitation.
11.
The cells of a plant are shrunken. How can you increase the turgor pressure inside the cells?
a)
Water the plant.
b)
Put the plant in direct sunlight.
c)
Place the plant in a cooler location.
d)
Change the soil in the plant's pot.
12.
Which of the following statements about photosynthesis is true?
a)
It takes place in the nucleus of plant cells.
b)
It produces carbon dioxide.
c)
It converts chemical energy into light energy.
d)
It converts light energy into chemical energy.
13.
The diagram below shows an energy pyramid.
What happens on each move to a higher level of the energy pyramid?
What happens on each move to a higher level of the energy pyramid?
a)
The amount of energy decreases.
b)
The number of organisms increases.
c)
The amount of energy increases.
d)
The size of organisms decreases.
14.
In cellular respiration, what do cells use to release energy from food?
a)
water
b)
sunlight
c)
oxygen
d)
carbon dioxide
15.
Study the diagram of the food web. How many living things would be immediately affected if all of the grass died?
a)
3
b)
6
c)
8
16.
Which living things would you add to a compost bin to help break down food and recycle matter?
a)
decomposers
b)
producers
c)
consumers
17.
Where does energy first come into an ecosystem?
a)
Producers make energy.
b)
The sunlight provides energy to producers.
c)
Consumers obtain energy from animals.
d)
Scavengers obtain energy from dead plants.
18.
Which of the following pairs of organisms are producers in their ecosystems?
a)
cactuses and vultures
b)
turtles and lions
c)
lichens and bacteria
d)
trees and algae
19.
Which group represented in an energy pyramid has the largest population?
a)
scavengers
b)
decomposers
c)
producers
d)
carnivores
20.
Which of the following is an example of the scientific definition of work?
a)
walking while holding a heavy box
b)
memorizing multiplication tables
c)
writing a computer program
d)
picking up a stack of books
21.
Which type of energy is stored in food?
a)
thermal energy
b)
electrical energy
c)
mechanical energy
d)
chemical energy
22.
The figure shows a food chain that might exist in a meadow. Which of the following best describes what the food chain represents?
a)
how an organism might change over time
b)
the movement of organisms throughout the ecosystem
c)
the increase in size among organisms in the ecosystem
d)
the path of energy transfer from producers to consumers
23.
The following picture shows the process of photosynthesis. What product is missing?
a)
ATP
b)
nitrogen
c)
hydrogen
d)
glucose (sugar)
24.
The food web shows some of the feeding relationships among organisms in Arctic waters.
Which organism would be least affected by overfishing for cod in Arctic waters?
Which organism would be least affected by overfishing for cod in Arctic waters?
a)
seals
b)
shrimp
c)
baleen whales
d)
toothed whales
25.
What is the difference between a food web and an energy pyramid?
a)
There is no difference; food webs and energy pyramids show the same types of relationships between organisms.
b)
Food webs show all the feeding relationships between organisms, while energy pyramids show how energy moves from producer to consumer.
c)
Food webs show an animal at the top of the energy pyramid, while energy pyramids show only how producers get their energy.
d)
Energy pyramids show how energy flows between organisms, while food webs show only the different organisms in an ecosystem.
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