Chapter 4 (6)

Question 1

ECOSYSTEM

Answer 1

an area in which living things interact with one another and with nonliving things

Question 2

POPULATION

Answer 2

a group of organisms of the same species living together in an ecosystem

Question 3

COMMUNITY

Answer 3

all of the populations living in an ecosystem

Question 4

HABITAT

Answer 4

the part of an ecosystem in which an organism lives

Question 5

NICHE

Answer 5

an organism’s role in an ecosystem

Question 6

DIVERSITY

Answer 6

a measure of the number and variety of species in an ecosystem

Question 7

PRODUCER

Answer 7

an organism that makes its own food

Question 8

FOOD CHAIN

Answer 8

a sequence of connected producers and consumers

Question 9

CONSUMER

Answer 9

an organism that eats other organisms

Question 10

FOOD WEB

Answer 10

a group of connected food chains in an ecosystem

Question 11

ENERGY PYRAMID

Answer 11

a diagram that shows that energy is lost at each level in a food chain

Question 12

COMPETITION

Answer 12

the struggle among organisms for limited resources in an area

Question 13

SYMBIOSIS

Answer 13

a close relationship between organisms of different species in which one or both of the organisms benefit

Question 14

PARASITE

Answer 14

an organism that benefits from its relationship with an organism that it lives in or on while the other organism is harmed

Question 15

HOST

Answer 15

the organism that a parasite live in or on

Question 16

PARASITISM

Answer 16

one benefits/one harmed

Question 17

MUTUALISM

Answer 17

both benefits

Question 18

COMMENSALISM

Answer 18

one benefits/one neutral