Environmental; Science Chapter 5 Study Guide
Which of the following is not a true statement about cellular respiration?
Sugar molecules are its primary products.
Which of the following is not a likely component of soil formed during primary succession?
cast-off parts of shrubs and trees
The bacteria that live within the roots of a soybean plant are a critical part of the nitrogen cycle because they
change atmospheric nitrogen into a usable form.
Which of the following does not contain carbon from the bodies of plants and animals that died millions of years ago?
phosphate salts
What type of succession occurs after a natural process such as a volcanic eruption or flood?
secondary succession
Which of the following plants is likely to be a pioneer species?
shrub
If an insect eats a plant and a bird eats the insect, about how much energy from the plant is stored in the insect for the bird to use?
10 percent
Which statement describes how humans are affecting the balance of carbon in the atmosphere?
Burning fossil fuels in great quantities has increased the amount of carbon dioxide in the atmosphere.
Which of the following statements is not correct?
Consumers get their energy directly from the sun.
Which of the following is one of the largest carbon reservoirs on Earth?
Limestone
Which organism is likely to be in the bottom trophic level of a food chain?
algae
Plants play a crucial role in the carbon cycle because they
allow carbon to enter an ecosystem through photosynthesis.
The energy consumed by organisms
can be stored in fat and sugar molecules.
Which item is a carbon sink and not part of the carbon cycle?
carbon found within limestone rocks
What kind of natural disaster helps some forest communities by allowing some trees to release their seeds, by clearing away deadwood, and by encouraging new growth?
fire
What term is used to refer to the many feeding relationships that are possible in an ecosystem?
food web
Which of the following are photosynthetic organisms?
freshwater algae
Consumers are organisms that
get solar or other energy indirectly.
Which of the following is an example of secondary succession?
growth of plants after a forest is destroyed by fire
Which kind of organism obtains energy only from producers?
herbivores
Succession is possible because
it is a rapid and chaotic process that is very difficult to control.
Which gas makes up 78 percent of our atmosphere but can be used by plants only when transformed by bacteria first?
nitrogen
Which of the following is responsible for making nitrogen in the atmosphere usable by living organisms?
nitrogen-fixing bacteria
What type of vegetation would you expect to find on an abandoned farm that has remained undisturbed for 150 years?
tall, mature oak trees
Where would an ecologist be least likely to go to study primary succession?
the Amazon Rain Forest