Ch. 18 Interactions of Living Things

Question 1

biotic

Answer 1

describes living factors in the enviroment

Question 2

abiotic

Answer 2

describes the NONliving part of the enviroment, including water, rocks, light and temperature.

Question 3

population

Answer 3

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

Question 4

community

Answer 4

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

Question 5

ecosystem

Answer 5

a community of organisms and their abiotic enviroment

Question 6

biosphere

Answer 6

the part of Earth where life exists

Question 7

herbivore

Answer 7

an organism that eats only plants

Question 8

carnivore

Answer 8

an organism that eats animals

Question 9

omnivore

Answer 9

an organism that eats both plants and animals

Question 10

food chain

Answer 10

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

Question 11

food web

Answer 11

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

Question 12

energy pyramid

Answer 12

a traingular diagram that shows an ecosystem’s loss of energy, which results as energy passes through the ecosystem’s food chain

Question 13

carrying capacity

Answer 13

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

Question 14

prey

Answer 14

an organism that is killed and eaten by another organism

Question 15

predator

Answer 15

an organism that eats all of part of another organism

Question 16

symbiosis

Answer 16

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

Question 17

mutualism

Answer 17

a relationship between two species in ehich both species benefit

Question 18

commensalim

Answer 18

a relationship between two organisms in which one organism benefits and the ther is unaffected

Question 19

paratism

Answer 19

a realtionship in which one species, the parasite benefits and the other is harmed

Question 20

coevolution

Answer 20

the evolution of two species that is due to mutual influence, foten in a way that makes the relationship more beneficial to both species

Question 21

ecology

Answer 21

the study of the interactions of living organisms with one another and with their enviroment