Unit 2 - ecosystems and their diversity

Question 1

biosphere

Answer 1

all the ecosystems in the world and their interactions

Question 2

ecosystem

Answer 2

a community of populations and abiotic factors

Question 3

community

Answer 3

• interacting populations

- competition predator-prey relationships

Question 4

population

Answer 4

same species living in a specific area at the same time

Question 5

organism

Answer 5

An individual form of life

Question 6

taxonomy levels

Answer 6

• domain
• kingdom
• phylum
• class
• order
• family
• genus
• species

Question 7

biomial nomenclature

Answer 7

a two part scientific name that includes the organisms’ genus and species
rules are:
- italicized
- first word is capitalized

Question 8

Three domains

Answer 8

Bacteria - unicellular and prokaryotic
Achea - unicellular and live in extreme environments
Eukarya - contain a nucleus

Question 9

dichotomous keys

Answer 9

a branched or stepped process that can be used to identify organisms

Question 10

differences in ______ and ______ lead to biomes

Answer 10

temperature and precipitation

Question 11

habitat

Answer 11

area within a biome or ecosystem where an organism lives

Question 12

range

Answer 12

geographical area where an organism is found

Question 13

niche

Answer 13

the role/task of the organism

Question 14

limiting factors

Answer 14

any biotic or abiotic element that controls the number of organisms in a population

biotic - competition
abiotic - weather

Question 15

interspecific competition

Answer 15

competition between 2 different species that have the same niche

Question 16

infraspecific competition

Answer 16

competition within a species

Question 17

sampling techniques

Answer 17

an average is calculated and the results are extrapolated to the entire area occupied by the population