Midterm Prep Extinction and Ecology Terms

Question 1

The sixth extinction

Answer 1

rapid population decrease not caused by natural forces

Question 2

mutualism

Answer 2

relationship that benefits both species

Question 3

commensalism

Answer 3

one species benefits, other is unaffected

Question 4

amensalism

Answer 4

one species is unaffected, other is harmed

Question 5

parasitism

Answer 5

one species benefits, other is harmed

Question 6

competition

Answer 6

two species require the same resource

Question 7

the four trophic levels consist of

Answer 7

1. Primary producer (plants)
2. Primary consumer (herbivores)
3. Secondary consumer (predation)
4. Tertiary consumer (apex predators)

Question 8

ecosystem

Answer 8

abiotic features + a biotic community make up an ecosystem

Question 9

niche

Answer 9

interrelationship of a species with all biotic/abiotic factors affecting it

Question 10

generalists vs specialists

Answer 10

Generalists- a species that can live in many different types of environments and have a varied diet. Ex. rats
Specialists- species that are adapted to narrow habitats, limited food resources, or other specific environmental conditions. Ex. panda

Question 11

biome

Answer 11

abiotic environment + living communities divided into major geographic regions

Question 12

ecology

Answer 12

the study of the relationships among living organisms and with their physical environment

Question 13

population

Answer 13

all members of a species in a particular area

Question 14

community

Answer 14

all living species within a particular area

Question 15

symbiosis

Answer 15

long term interaction between two different species living in close association