chapter 6 - communities and ecosystem dynamics

Question 1

habitat

Answer 1

area where an organism lives

Question 2

tolerance

Answer 2

range of conditions an organism needs

Question 3

niche

Answer 3

an organism’s

Question 4

resource

Answer 4

necessity of life

Question 5

competitive exclusion principle

Answer 5

the idea that no two species can occupy the exact same niche

Question 6

keystone species

Answer 6

small number; but strong species with influencial effect on the ecosystem

Question 7

symbiosis

Answer 7

2 species live together

Question 8

mutualism

Answer 8

type of symbiosis where both organisms benefit

Question 9

commensalism

Answer 9

type of symbiosis where one organism benefits to no cost to the other

Question 10

parasitism

Answer 10

type of symbiosis where one organism benefits and the other is harmed

Question 11

animal competition

Answer 11

occurs when two organisms try to use the same resource

Question 12

primary succession

Answer 12

type of succession where no remnants of old community remain (e.g. land under glacier)

Question 13

secondary succession

Answer 13

type of succession which is a restoration of the old climax community (

Question 14

greenhouse effect

Answer 14

process in which heat is trapped in the atmosphere

Question 15

herbivory

Answer 15

consumption of plant materials

Question 16

pioneer species

Answer 16

species which first inhabits a barren area (e.g. moss/lichen)

Question 17

marsh

Answer 17

wetland with herbaceous life

Question 18

swamp

Answer 18

forested wetland

Question 19

coastal ocean

Answer 19

areas of ocean near the shoreline

Question 20

intertidal zone

Answer 20

zone of ocean which can be dry or wet due to tide