Chapter 19B

Question 1

Community ecology

Answer 1

All the species in an area

Interactions between different species

Question 2

Extinction

Answer 2

The disappearance of a species from earth

Question 3

Hábitat

Answer 3

The place where an organism or population lives

Question 4

Biodiversity

Answer 4

The variety of species/ life in an ecosystem

It includes where the organisms live and the genetic variation between different species and within a species itself

Question 5

Mutualism

Answer 5

+/+

Two species benefit from their interaction

Ex: pollinators, ants and acacia trees

Question 6

Commensalism

Answer 6

+/0

One partner benefits while the other is neither helped nor harmed

Ex: barnacles that attach themselves to whales, but whale is not harmed nor benefited

Question 7

Exploitation/ consumption

Answer 7

+/-

One member benefits while the other is harmed

Ex: consumers (predators, herbivores, and parasitism )

Question 8

Fighting back consumers adaptations?

Answer 8

Camouflage
Mechanical defenses 
Chemical defenses 
Warning coloration 
Mimicry

Question 9

Competition

Answer 9

-/-

Two species compete for the same resources, there is less of the resource available for both so they are both harmed

Question 10

Competitive exclusion

Answer 10

No two species within a habitat can coexist indefinitely when they compete for the same resources at the same time and place

Question 11

Niche partitioning

Answer 11

Specializing on different niche

Allows competing species to coexist

Question 12

Niche

Answer 12

The sum total of all the conditions and resources a species needs in order to survive and successfully reproduce in its particular habitat