Biology 2485B Chapter Notes - Chapter 5: Detritivore, Chemosynthesis, Food Energy

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4 Jan 2019

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Lecture 5 textbook notes species interaction (pg. Community ecologists are interested in which species coexist, how they relate to one another, how communities change through time, and why these patterns exist. Detritivores and decomposers: detritivores scavenge, such as millipedes and soil insects, the waste products or the dead bodies of other community members. Energy, biomass, and numbers decrease at higher trophic levels: at each trophic level, most of the energy that organisms use is lost through respiration. Fewer organisms exist at higher trophic levels than at lower trophic levels: the same pyramid-like relationship also often holds true for biomass. The sheer number of prey relative to the predators means that prey biomass will likely be greater overall: unlike the pyramid of energy, however, the pyramids of numbers and biomass can occasionally be inverted. Keystone organisms play especially important roles in communities.

Related Questions

All of the organisms plus the nonliving components of a defined area is a/n ____.

Abiotic components of an ecosystem include ___.

The physical place where members of a population typically live is termed a __.

The total of all the resources, both biotic and abiotic, a species exploits for its survival, growth, and reproduction is its __.

When two or more species vie for the same limited resource, _____ occurs.

A relationship between different species in which one species lives in or on another is __.

Which of the following obtain energy and carbon by feeding on producers and one another? (choose one) decomposers, consumers, or producers

A type of symbiosis in which both species benefit is __.

Type of symbiosis where one member of the relationship benefits and has no effect on the other

A type of symbiosis in which one member of the relationship benefits and the other is harmed

Which of the following feed on organic wastes? (choose one) decomposers, consumers, or producers

Organisms that obtain their energy from producers or other consumers are __.

All of the organisms plus the nonliving components of a defined area is a/n ____.

Abiotic components of an ecosystem include ___.

The physical place where members of a population typically live is termed a __.

The total of all the resources, both biotic and abiotic, a species exploits for its survival, growth, and reproduction is its __.

When two or more species vie for the same limited resource, _____ occurs.

A relationship between different species in which one species lives in or on another is __.

Which of the following obtain energy and carbon by feeding on producers and one another? (choose one) decomposers, consumers, or producers

A type of symbiosis in which both species benefit is __.

Type of symbiosis where one member of the relationship benefits and has no effect on the other

A type of symbiosis in which one member of the relationship benefits and the other is harmed

Which of the following feed on organic wastes? (choose one) decomposers, consumers, or producers

Organisms that obtain their energy from producers or other consumers are __.

It's a quiz for my life science class.

QUESTION 1

Organisms that have descended from the same initial group and have the ability to interbreed belong to the same

	A.	species.
	B.	family.
	C.	class.
	D.	genus.
	E.	order.

5 points

QUESTION 2

The simplest entity that exhibits all of the properties of life is called a(n)

	A.	molecule.
	B.	cell.
	C.	organism.
	D.	tissue.

5 points

QUESTION 3

In populations, adaptation usually arises through

	A.	responsiveness.
	B.	heredity.
	C.	metabolism.
	D.	natural selection.
	E.	development.

5 points

QUESTION 4

Scientists have found that ancient fossils

	A.	are less similar to present-day organisms than more recent fossils.
	B.	are just as similar to present-day organisms as more recent fossils.
	C.	are more similar to present-day organisms than more recent fossils.
	D.	are very similar to present-day organisms.
	E.	bear no resemblance to present-day organisms.

5 points

QUESTION 5

What is the term that describes the study of the relationship between living things and components of their environment?

	A.	herpetology
	B.	analogy
	C.	zoology
	D.	ecology
	E.	ichnology

5 points

QUESTION 6

Characteristics usually associated with life include all of the following except:

	A.	motility.
	B.	a high degree of organization.
	C.	lack of change from generation to generation.
	D.	reproduction.
	E.	responsiveness to stimuli.

5 points

QUESTION 7

The scientific name for the black-footed ferret is Mustela nigripes. The name Mustela indicates the _____________________ to which the organisms belongs.

	A.	phylum
	B.	class
	C.	family
	D.	species
	E.	genus

5 points

QUESTION 8

Which of the following is considered to be the most basic living unit?

	A.	organ system
	B.	molecule
	C.	organelle
	D.	cell
	E.	tissue

5 points

QUESTION 9

Which of the following concepts best describes the wide variety of dog species we observe, ranging from the domesticated golden retriever or the basset hound, to the wild dogs of Africa, to foxes?

	A.	preadaptation
	B.	special creation
	C.	inheritance of acquired characteristics.
	D.	taxonomy
	E.	evolution

5 points

QUESTION 10

If an ecologist is studying the cycling of carbon through a particular environment (which involes the movement of carbon through living things as well as through rock, air, and water), the scientist is studying at what level of ecology?

	A.	organismal
	B.	community
	C.	ecosystem
	D.	population
	E.	biosphere

5 points

QUESTION 11

Which list is organized from smallest to largest level of organization of life?

	A.	organisms, organ systems, organs, tissues, cells, organelles
	B.	organelles, cells, tissues, organs, organ systems, organisms
	C.	organelles, tissues, cells, organ systems, organs, organisms
	D.	tissues, cells, organelles, organs, organ systems, organisms
	E.	cells, tissues, organ systems, organelles, organs, organisms

5 points

QUESTION 12

When examining the hierarchy of life, which of the following terms is most inclusive?

	A.	biosphere
	B.	population
	C.	species
	D.	ecosystem

5 points

QUESTION 13

The units of inheritance are

	A.	evolutions.
	B.	heredities.
	C.	genes
	D.	twins.
	E.	metabolic activities.

5 points

QUESTION 14

Organisms that undergo asexual reproduction

	A.	require another organism to reproduce.
	B.	are usually very complex.
	C.	produce offspring that are different from each other.
	D.	do not require energy to reproduce.
	E.	produce offspring that are identical to each other and to the parent.

5 points

QUESTION 15

All the living organisms in a particular area at a particular time make up a

	A.	biosphere.
	B.	community.
	C.	biosystem.
	D.	population.
	E.	ecosystem.

5 points

QUESTION 16

The first step in the scientific method is to

	A.	identify a problem.
	B.	predict the results of an experiment.
	C.	propose a solution.
	D.	draw a conclusion.
	E.	perform an experiment.

5 points

QUESTION 17

Young multicelled organisms usually start out small, then grow in size, and increase in complexity. This process is called:

	A.	heredity.
	B.	metabolism.
	C.	development.
	D.	evolution.
	E.	heredity.

5 points

QUESTION 18

To maintain order within their cells and organs, all living things must

	A.	carry on metabolism.
	B.	reproduce.
	C.	constantly change.
	D.	be able to move.
	E.	extract energy from sunlight.

5 points

QUESTION 19

Which of the following includes Highest levels of hierarchy?

	A.	family
	B.	phylum
	C.	domain
	D.	kingdom
	E.	order

5 points

QUESTION 20

Fungi are classified into which domain?

	A.	Archaea
	B.	Eukarya
	C.	Bacteria
	D.	Fungi

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Biology 2485B Chapter Notes - Chapter 5: Detritivore, Chemosynthesis, Food Energy

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