The Dynamics Of Life Unit 2 Ch 4 - 5

Front 1

A(n) ____________ is any biotic or abiotic factor that restricts the existence, numbers, reproduction of organisms.

Back 1

limiting factor

Front 2

List the restrictions a limiting factor might place on an organism. (list 3)

Back 2

existence, numbers, reproduction (In other words limits who many there are by removing some or all of them or keeping them from making more of them.)

Front 3

The ability of an organism to withstand fluctuations in biotic and abiotic environmental factors is known as ___________.

Back 3

tolerance

Front 4

Ecologists refer to the orderly, natural changes and species replacement that take place in the communities of an ecosystem as ____________.

Back 4

succession

Front 5

The colonization of barren land by communities of organisms is call _____________.

Back 5

primary succession

Front 6

A stable, mature community that undergoes little or no change in species is a ______________.

Back 6

climax community

Front 7

_________________ is the sequence of changes that takes place after an existing community is severely disrupted in some way.

Back 7

secondary succession

Front 8

A(n) ________ is a large group of ecosystems that share the same type of climax community.

Back 8

biome

Front 9

A biome made up of water is called a(n) ___________ biome.

Back 9

aquatic

Front 10

List the three types of purely aquatic biomes and the four types of biomes that are semi-aquatic.

Back 10

aquatic:
marine (salt water)
freshwater
estuary (mixed salt and fresh)
semi-aquatic:
intertidal zone
marshes
swamps
bogs

Front 11

The portion of the marine biome that is shallow enough for sunlight to penetrate is called the __________.

Back 11

photic zone

Front 12

Deeper water that never receives sunlight mikes up the _________.

Back 12

aphotic zone

Front 13

_________ are small organisms that drift and float in the waters of the photic zone.

Back 13

plankton

Front 14

The portion of the shoreline that lies between te high and low tide lines is called the ____________.

Back 14

intertidal zone

Front 15

An aquatic biome that contains both fresh and salt water is called a(n) _________.

Back 15

estuary

Front 16

An aquatic biome that contains only salt water is called a(n) __________.

Back 16

marine biome

Front 17

An aquatic biome that is shallow and has trees is called a(n) _________.

Back 17

swamp

Front 18

A shallow aquatic biome that has grasses but no trees is called a(n) ____________.

Back 18

marsh

Front 19

An aquatic biome that is created by rainwater and has no water flowing in it is called a(n) ________.

Back 19

bog

Front 20

A biome that is made up of land is called a(n) _____________ biome.

Back 20

terrestrial

Front 21

A treeless land with long summer days and short periods of winter sunlight near the north pole is called the ________.

Back 21

tundra

Front 22

Underneath the top layer of tundra is the ____________.

Back 22

permafrost

Front 23

The ________ also is called the boreal or nerthern coniferous forest.

Back 23

taiga

Front 24

Larch, fir, hemlock, and spruce trees are common in the _______.

Back 24

taiga

Front 25

A ________ is an arid region with sparse to almost nonexistent plant life.

Back 25

desert

Front 26

__________ are large communities covered with rich soil, grasses, and similar plants

Back 26

grasslands

Front 27

__________ forests are dominated by broad-leaved hardwood trees that lose their foliage annually.

Back 27

temperate or deciduous

Front 28

__________ forests have warm temperatures, wet weather, and lush plant growth.

Back 28

tropical rain

Front 29

The three layers of the rain forest are the __________, ________, and __________.

Back 29

canopy, understory, groung