ecology1 flashcards

Question 1

nonliving parts of an ecosystem

Answer 1

abiotic factors

Question 2

nonliving parts of an environment are called__________.

Answer 2

abiotic factors

Question 3

the biosphere extends from high in the _________ to the bottom of the oceans.

Answer 3

Atmosphere

Question 4

the study of life

Answer 4

biology

Question 5

the regions of the surface and atmosphere of the Earth where living organisms exist

Answer 5

biosphere

Question 6

all living things on earth can be found in the _________ the potion of earth that supports life

Answer 6

Biosphere

Question 7

living parts of an ecosystem

Answer 7

biotic factors

Question 8

all the living organisms that inhabit an environment

Answer 8

biotic factors

Question 9

Which organism is an omnivore?

Answer 9

Bird

Question 10

Which organism belongs to more than one trophic level?

Answer 10

Bird

Question 11

Animals lose water when they

Answer 11

Breathe and urinate

Question 12

plants use _____________________ in photosynthesis to make carbon molecules

Answer 12

Carbon dioxide

Question 13

decomposers break down the carbon molecules by feeding on other organisms and release ___________

Answer 13

carbon dioxide

Question 14

one species benefits and the other species in neither benefited nor harmed by the relationship

Answer 14

commensalism

Question 15

a group of interdependent organisms inhabiting the same region and interacting with each other

Answer 15

community

Question 16

a collection of interacting populations.

Answer 16

Community

Question 17

the struggle between organisms to survive in a habitat with limited resources

Answer 17

competition

Question 18

occurs between organisms when resources are scarce.

Answer 18

Competition

Question 19

__________ break down the carbon molecules of dead and decaying organisms

Answer 19

Decomposers

Question 20

From which trophic levels are the organisms that decomposers feed on?

Answer 20

All trophic levels

Question 21

the branch of biology concerned with the relations between organisms and their environment

Answer 21

ecology

Question 22

a system formed by the interaction of a community of organisms with their physical environment

Answer 22

ecosystem

Question 23

interactions among the populations and abiotic factors in a community.

Answer 23

Ecosystem

Question 24

the specific conditions under which animals and plants can live

Answer 24

environments

Question 25

the branch of biology called ecology is the scientific study of interactions among organisms and their ______

Answer 25

environments

Question 26

Plants lose water to the air through

Answer 26

evaporation

Question 27

an aquatic ecosystem.

Answer 27

marine

Question 28

a terrestial ecosystem.

Answer 28

Forest

Question 29

autotrophs and heterotrophs use carbon molecules for energy and ______

Answer 29

Growth

Question 30

for example whales trees and ________ are biotic factors.

Answer 30

humans

Question 31

Which organism is an herbivore?

Answer 31

insect

Question 32

both species benefit from the other relationship

Answer 32

mutualism

Question 33

the branch of biology called ecology is the scientific study of interactions among organisms and their environments including relationships between living and ________ things.

Answer 33

nonliving

Question 34

when things are not alive they are

Answer 34

Nonliving

Question 35

besides energy what moves through the organisms at each trophic level of an ecosystem

Answer 35

nutrients

Question 36

Any single living thing

Answer 36

organisms

Question 37

living organisms in our world are connected to other ___________ in a variety of ways.

Answer 37

Organisms

Question 38

one species benefits from the relationship at the expense of the other species

Answer 38

parasitism

Question 39

Which organism is an autotroph?

Answer 39

Plant algae plankton

Question 40

a group of organisms of one species that interbreed and live in the same place at the same time.

Answer 40

Population

Question 41

group of individuals of the same species that live in the same area

Answer 41

population

Question 42

the water in the atmosphere is returned to the earth by

Answer 42

Precipitation

Question 43

To what trophic level does a third-order heterotroph belong?

Answer 43

4th

Question 44

ocean currents temperature and _______ are abiotic factors.

Answer 44

Soil

Question 45

material in the top layer of the surface of the earth in which plants can grow

Answer 45

soil

Question 46

Energy that is lost at each trophic level of an ecosystem is replenished by

Answer 46

sunlight

Question 47

organisms of different species live together in a close permanent relationship

Answer 47

symbiosis

Question 48

evaporation and condensation a part of the

Answer 48

water cycle

Question 49

a habitat is the role of a species in a community T OR F

Answer 49

FALSE

Question 50

a niche is the place where an organism lives its life T OR F

Answer 50

FALSE

Question 51

a habitat can include only one niche T OR F

Answer 51

FALSE

Question 52

it is an advantage for two species to share the same niche T OR F

Answer 52

FALSE

Question 53

all organisms belong to only one food chain ? T or F

Answer 53

FALSE

Question 54

habitat may change T OR F

Answer 54

TRUE

Question 55

a species’ niche includes how the species meets its need for food and shelter T OR F

Answer 55

TRUE

Question 56

the centipedes and worms that live under a certain log occupy the same habitat but have different niches. T OR F

Answer 56

TRUE

Question 57

competition between two species is reduced when the species have different niches. T OR F

Answer 57

TRUE