Ch. 4 Key Terms

Question 1

ecosystem

Answer 1

all of the organisms living in the same area

Question 2

biotic factor

Answer 2

animals, fungi, bacteria, and plants

Question 3

abiotic factor

Answer 3

dead organisms and dead parts of organisms

Question 4

organism

Answer 4

an individual living thing

Question 5

species

Answer 5

a group of organisms that can mate to produce fertile offspring

Question 6

population

Answer 6

a group of the same species that live in the same place

Question 7

community

Answer 7

a group of various species that live in the same place

Question 8

habitat

Answer 8

the place an organism lives

Question 9

natural selection

Answer 9

the process in which individuals that are better adapted

Question 10

evolution

Answer 10

a change in genetic characteristics

Question 11

adaptation

Answer 11

an inherited trait that increases an organisms chance at survival

Question 12

artificial selection

Answer 12

the selective breeding of organisms by humans for specific characteristics

Question 13

resistance

Answer 13

the ability of one or more organisms to tolerate particular chemicals.

Question 14

archaea

Answer 14

found in extreme places such as hot springs

Question 15

bactira

Answer 15

can be found in many places like dirt

Question 16

fungus

Answer 16

an organism whose cells have nuclei and cell walls

Question 17

protist

Answer 17

diverse group of both unicellular and multicellular organisms

Question 18

gymnosperm

Answer 18

woody plants that produce seeds

Question 19

angiosperm

Answer 19

flowering plants that produce seeds in fruit

Question 20

invertebrate

Answer 20

animals that lack back bones

Question 21

vertebrate

Answer 21

animals that have backbones