Chapter 6.1

Question 1

area where an organism lives including the biotic and abiotic factors that affect it

Answer 1

Habitat

Question 2

ability of an organism to survive and reproduce under circumstances that differ from their optimal conditions

Answer 2

Tolerance

Question 3

full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions

Answer 3

Niche

Question 4

any necessity of life, such as water, nutrients, light, food, or space

Answer 4

Resource

Question 5

principle that states that no two species can occupy the same niche in the same habitat at the same time

Answer 5

Competitive Exclusion Principle

Question 6

single species that is not usually abundant in a community yet exerts strong control on the structure of a community

Answer 6

Keystone species

Question 7

relationship in which two species live close together

Answer 7

Symbiosis

Question 8

symbiotic relationship in which one organism benefits and the other is neither helped nor harmed

Answer 8

Commensalism

Question 9

symbiotic relationship in which both species benefit from the relationship

Answer 9

Mutualism

Question 10

a symbiotic relationship in which one organism lives on or inside another organism and harms it

Answer 10

Parasitism