Chapter 2

Question 0

Biological community

Answer 0

Community made up of interacting populations in a certain area at a certain time

Question 1

Abiotic factor

Answer 1

Non living parts of an organism environment; air currents l, temperature, moisture, light, and soil

Question 2

Biosphere

Answer 2

Portion of earth that supports life; extends from high in the atmosphere to the bottom of the oceans

Question 3

Biotic factor

Answer 3

All the living organisms that inhabit an environment

Question 4

Commensalism

Answer 4

Symbiotic relationship in which one species benefits and the other species is neither harmed not benefited

Question 5

Ecology

Answer 5

Scientific study of interactions between organisms and their environments

Question 6

Ecosystem

Answer 6

Interactions among populations in a community; the community’s physical surroundings

Question 7

Habitat

Answer 7

Place where an organisms lives out it’s life

Question 8

Mutualism

Answer 8

Symbiotic relationship where both species benefit

Question 9

Niche

Answer 9

Role or position a species has in its environments

Question 10

Parasitism

Answer 10

Symbiotic relationship in which one organism benefits at the expense of another, usually another specie

Question 11

Population

Answer 11

Group of organisms all of the same species

Question 12

Symbiosis

Answer 12

Permanent, close association between two or more organisms of different species

Question 13

Autotroph

Answer 13

Organisms that use energy from the sun or energy then stored in chemical compounds to manufacture their own nutrients

Question 14

Biomass

Answer 14

Total mass or weight of all living matter in a given area

Question 15

Decomposer

Answer 15

Organism, such as fungi and bacteria, that break down and absorb nutrients from dead organisms

Question 16

Food chain

Answer 16

Simple model that shows how matter and energy move through an ecosystem

Question 17

Food web

Answer 17

Model that shows all the possible feeding relationships at each graphic level in a community

Question 18

Heterotroph

Answer 18

Organisms that cannot make their own food and must feed on other organisms for energy and nutrients

Question 19

Trophic level

Answer 19

Organism that represents a feeding step in the movement of energy an materials through an ecosystem