Ch. 2 Flashcards Quizlet PDF

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Ch. 2 Flashcards | Quizlet

Sports / Cycl ng

Ch. 2 Terms in this set (54)

Ecology is

Examples of abiotic factors include

which of the following mainly determine a

the study of how living things interact with eachother and with their environments.

sunlight, soil, and water

temperature and rainfall

habitats features?

Energy enters most ecosystems in the form

sunlight

of

Examples of producers include

plants, algae, and cyanobacteria

which statement best explains the

Producers use the molecules that decomposers release back to the

relationship between decomposers and

environment

producers

which statement best explains the

a food web includes many intersecting food chains.

relationship between a food chain and a food web?

which organism would occupy the fourth

bald eagle

trophic level?

approximately how much energy is passed

10%

between trophic levels?

which group of organisms would have the

all the producers in an ecosystem

greatest biomass

the first trophic level is usually occupied by

FALSE-producers

herbivores

It is possible for a plant to be a herbivore

A habitat refers to the role of a species in its

TRUE

FALSE-niche

ecosystem

Biotic factors include sunlight, soil,

FALSE-abiotic

temperature, and water

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a food web can be represented by many

Ch. 2 Flashcards | Quizlet

TRUE

interconnected food chains

there are rarely more than four trophic levels

TRUE

in an ecosystem

like water, energy is also recycled through an

FALSE- matter

ecosystem

Abiotic factors are the ____ aspects of the

non-living

environment

A ____ refers to the role of a species in its

niche

ecosystem

The competitive ____ principle states that two

exclusion

different species cannot occupy the same niche for very long

producers are organisms that produce ____ for

food

themselves and other organisms

____ include lions, polar bears, hawks, and

carnivores

spiders

decomposers break down the ___ of dead

remains

organisms

____ levels represent the feeding positions in a

trophic

food chain or web

___ is the study of how living things interact

ecology

with each other and with their environments

Distinguish between abiotic and biotic factors. Give examples of each.

describe how energy flows through ecosystems

an abiotic factor is the non living components of an ecosystem Ex. water, soil biotic factor is living components of an ecosystem Ex. plants/animals

plants take in sunlight and covert it to chemical energy by the process of photosynthesis. The energy moves to the consumers when they eat producers.

which of the following best describes

they cycle elements through the biotic and abiotic components of an

biogeochemical cycles?

ecosystem

which of the following are part of the water

1 and 2

cycle? (1) transpiration (2) precipitation (3) sedimentation

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which is the correct order of events of the

transpiration-condensation-precipitation-runoff

water cycle?

in the carbon cycle, autotrophs

remove carbon from the atmosphere during photosynthesis

is needed to make proteins and nucleic acids. nitrogen

makes up most of the earths atmosphere. must be changed to a form which plants can absorb through their roots.

is carried out by certain types of bacteria. nitrogen fixation

cannot be done by plants. changes nitrogen to a form called nitrates.

carbon is stored in the ecosystem (1) in the

1, 2, and 3

atmosphere, (2) in living organisms, or (3) as fossil fuel deposits

the deep ocean can store carbon for

TRUE

thousands of years or more

fossil fuels store carbon from dead

TRUE

organisms

precipitation that flows over the surface of

FALSE-runoff

the ground is called groundwater

condensation is the process in which water

FALSE-precipitation

falls as rain, sleet, or snow

part of a cycle that holds an element for a

TRUE

short period of time is an exchange pool

water on Earth is billions of years old

transpiration occurs when plants release

TRUE

TRUE

water vapor

most of the earths atmosphere is made of

FALSE-nitrogen

oxygen

Nitrogen fixation is carried out by nitrogen-

FALSE-bacteria

fixing plants and fungi

the chemical elements and water that are

recycle

needed by organisms ___ in ecosystems

the deep ocean is a reservoir that may hold

water

___ for thousands of years

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carbon is stored for varying lengths of time

fuel

as fossil ___ deposits

cellular respiration releases ___ into the

carbon

atmosphere as carbon dioxide

photosynthesis removes ___ from the

carbon dioxide

atmosphere and uses it to make organic compounds

___ is an important part of living things; it is

nitrogen

found in proteins, nucleic acids, and chlorophyll

___ cannot use nitrogen gas from the air to

plants

make organic compounds

nitrogen-fixing ___ live in soil and roots of

bacteria

legumes, such as peas

describe the role of organisms in the carbon cycle

plants take in carbon dioxide from the atmosphere and use it to make organic compounds by photosynthesis, consumers take in carbon when they eat plants

explain the three processes by which water changes to a gas

evaporation- when water leaves earths surface transpiration- water leaves a plant sublimation-ice, snow, sleet change to water vapor

H

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