Unit 6 (ecology)

Question 1

the study of the intereactions of living organisms

Answer 1

ecology

Question 2

a group of organisms of the same species that live in a specific geographical area

Answer 2

population

Question 3

a role of a species in its community, including use of its habitat and its relationships with other species

Answer 3

niche

Question 4

a community of organisms and their abiotic, or nonliving, enviroment

Answer 4

ecosystem

Question 5

an enviromental factor that is NOT associated with the activities of living organisms

Answer 5

abiotic factor

Question 6

an enviromental factor that is associated with or results from the activities of living organisms

Answer 6

biotic factor

Question 7

the place where an organism usually lives

Answer 7

habitat

Question 8

all of the populations of species that live in the same habitat and interact with each other

Answer 8

community

Question 9

a triangular diagram that shows an ecosystems loss of energy, which results as energy passes through the ecosystems food chain; each rows in the pyramid represents a trophic (feeding) level in an ecosystem, and the area of a row represents the energy stored in that trophic level

Answer 9

energy pyramid

Question 10

the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms

Answer 10

food chain

Question 11

a diagram that shows the feeding relationships between organisms in an ecosystem

Answer 11

food web

Question 12

an organism that eats only plants

Answer 12

herbivore

Question 13

an organism that eats animals

Answer 13

carnivore

Question 14

an organism that eats both plants and animals

Answer 14

omnivore

Question 15

the largest population that an enviroment can support at any given time

Answer 15

carrying capacity

Question 16

an enviromental factor that prevents an organism or population from reaching its full potential of size or activity

Answer 16

limiting factor

Question 17

an interaction between two or more living things in which they are said to work together

Answer 17

cooperation

Question 18

an organism that kills and eats or part of another organism

Answer 18

predator

Question 19

a relationship between two species in which both species benifit

Answer 19

mutualism

Question 20

ecological relationship in which two or more organisms depend on the same limited resource

Answer 20

competion

Question 21

an organism that is killed and eaten by another organism

Answer 21

prey

Question 22

a relationship between two species in which one species, the parasite, benifits from the other species, the host, which is harmed

Answer 22

parasitism

Question 23

a relationship in which two different organisms live in close association with each other

Answer 23

symbiosis

Question 24

a relationship between two organisms in which one organism benifits and the other is unaffected

Answer 24

commensalism