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Chapter 55 - AP Bio Test Bank Exam Questions with Complete Solutions
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How are matter and energy used in ecosystems? A) Matter is cycled through ecosystems; energy is not. B) Energy is cycled through ecosystems; matter is not. C) Energy can be converted into matter; matter cannot be converted into energy. D) Matter can be converted into energy; energy cannot...

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  • August 26, 2024
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  • how are matter and energy used in ecosystems

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Chapter 55 - AP Bio Test Bank Exam
Questions with Complete Solutions
How are matter and energy used in ecosystems?

A) Matter is cycled through ecosystems; energy is not.
B) Energy is cycled through ecosystems; matter is not.
C) Energy can be converted into matter; matter cannot be converted into energy.
D) Matter can be converted into energy; energy cannot be converted into matter.
E) Matter is used in ecosystems; energy is not - Answer-A

A cow's herbivorous diet indicates that it is a(n)

A) primary consumer.
B) secondary consumer.
C) decomposer.
D) autotroph.
E) producer. - Answer-A

To recycle nutrients, the minimum an ecosystem must have is

A) producers.
B) producers and decomposers.
C) producers, primary consumers, and decomposers.
D) producers, primary consumers, secondary consumers, and decomposers.
E) producers, primary consumers, secondary consumers, top carnivores, and
decomposers. - Answer-B

Which of the following terms encompasses all of the others?

A) heterotrophs
B) herbivores
C) carnivores
D) primary consumers
E) secondary consumers - Answer-A

Which of the following are responsible for the conversion of most organic material into
CO2, which can be utilized in primary production?

A) autotrophs
B) detrivores
C) primary consumers
D) herbivores
E) carnivores - Answer-D

,Of the following pairs, which are the main decomposers in a terrestrial ecosystem?

A) fungi and prokaryotes
B) plants and mosses
C) insects and mollusks
D) mammals and birds
E) annelids and nematodes - Answer-E

Many homeowners mow their lawns during the summer and collect the clippings, which
are then hauled to the local landfill. Which of the following actions would most benefit
the local ecosystem?

A) Allow sheep to graze the lawn and then collect the sheep's feces to be delivered to
the landfill.
B) Collect the lawn clippings and burn them.
C) Either collect the clippings and add them to a compost pile, or don't collect the
clippings and let them decompose into the lawn.
D) Collect the clippings and wash them into the nearest storm sewer that feeds into the
local lake.
E) Dig up the lawn and cover the yard with asphalt. - Answer-C

What is the most important role of photosynthetic organisms in an ecosystem?

A) converting inorganic compounds into organic compounds
B) absorbing solar radiation
C) producing organic detritus for decomposers
D) dissipating heat
E) recycling energy from other tropic levels - Answer-A

Ecosystems are

A) processors of energy and transformers of matter.
B) processors of matter and transformers of energy.
C) processors of matter and energy.
D) transformers of matter but not of energy.
E) neither transformers or processors of matter nor energy. - Answer-B

Which of the following is an example of an ecosystem?

A) All of the brook trout in a 500 hectare2 river drainage system.
B) The plants, animals, and decomposers that inhabit an alpine meadow.
C) A pond and all of the plant and animal species that live in it.
D) The intricate interactions of the various plant and animal species on a savanna
during a drought.

, E) Interactions between all of the organisms and their physical environment in a tropical
rain forest. - Answer-E

If the Sun were to suddenly stop providing energy to Earth, most ecosystems would
vanish. Which of the following ecosystems would likely survive the longest after this
hypothetical disaster?

A) tropical rainforest
B) tundra
C) benthic ocean
D) grassland
E) desert - Answer-C

Which of the following is true of detrivores?

A) They recycle chemical elements directly back to primary consumers.
B) They synthesize organic molecules that are used by primary producers.
C) They convert organic materials from all trophic levels to inorganic compounds usable
by primary producers.
D) They secrete enzymes that convert the organic molecules of detritus into CO2 and
H2O.
E) Some species are autotrophic, while others are heterotrophic. - Answer-C

Suppose you are studying the nitrogen cycling in a pond ecosystem over the course of
a year. While you are collecting data, a flock of 100 Canada geese lands and spends
the night during a fall migration. What could you do to eliminate error in your study as a
result of this event?

A) Find out how much nitrogen is consumed in plant material by a Canada goose over
about a 12-hour period and multiply this number by 100 and add to the total nitrogen in
the ecosystem.
B) Find out how much nitrogen is eliminated by a Canada goose over about a 12-hour
period and multiply this number by 100 and subtract from the total nitrogen in the
ecosystem.
C) Find out how much nitrogen is consumed and eliminated by a Canada goose over
about a 12-hour period and multiply this number by 100; enter this +/-value into the
nitrogen budget of the ecosystem.
D) Do nothing. The Canada geese visitation to the lake would have negligible impa -
Answer-C

The producers in aquatic ecosystems include organisms in which of the following
groups?

A) cyanobacteria
B) algae
C) plants

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