ecology

Question 1

Hierarchy of organization

Answer 1

Organis, population, community, ecosystem, biosphere

Question 2

Organism

Answer 2

Any uni/multicellular form exhibiting all characteristics of life

Question 3

Population

Answer 3

group of one species living in the same place at same time that interbreed

Question 4

Community

Answer 4

Several interacting populations with a common environment (interdependent)

Question 5

Ecosystem

Answer 5

populations in a community and their abiotic factors

Question 6

Biome

Answer 6

Large group of ecosystems with same climate and similar communities

Question 7

Biosphere

Answer 7

Life supporting portions of Earth with air, land, fresh and salt waters

Question 8

Habitat

Answer 8

Place where organisms live

Question 9

Niche

Answer 9

Role a species plays in a community

Question 10

Limiting factor

Answer 10

Any (a)biotic factor that restricts existence of organism in a specific enviroment

Question 11

Limiting factor examples

Answer 11

water, food, temp., space, mate availability

Question 12

Feeding relationships

Answer 12

Producer-consumer, predator-prey, and parasite-host

Question 13

Producers

Answer 13

All autotrophs

Question 14

Consumers

Answer 14

All heterotrophs

Question 15

Trophic Level Energy

Answer 15

Only about 10% of energy is transferred up the trophic levels

Question 16

Biomass

Answer 16

Amount of organic matter in a group of organisms in a habitat

Question 17

Food web

Answer 17

All possible feeding relationships in a community at each trophic level

Question 18

Water cycle

Answer 18

Transpiration, evaporation, condensation, precipitation, runoff

Question 19

Transpiration

Answer 19

Water evaporating from surface of leaves

Question 20

Evaporation

Answer 20

Liquid water changes to gas

Question 21

Condensation

Answer 21

Water vapor changes to liquid

Question 22

Precipitation

Answer 22

Condensed water in clouds falls to the surface

Question 23

Carbon cycle

Answer 23

Key ingredient in living tissue

Question 24

Geochemical reactions

Answer 24

Release carbon dioxide in atmosphere and oceans

Question 25

Human role in carbon cycle

Answer 25

Burning fossil fuels and cellular respiration

Question 26

Non-human role in carbon cycle

Answer 26

Volcanic activity, decomposition, carbon dioxide dissolving in water

Question 27

Nitrogen cycle

Answer 27

All organisms require nitrogen to make amino acids which are used to build proteins

Question 28

Atmospheric nitrogen

Answer 28

Makes up nearly 78-80% of air. Organisms cannot use in this form

Question 29

Atmospheric nitrogen conversion

Answer 29

Lightning and bacteria can convert atmospheric nitrogen to a usable form

Question 30

Human contribution to nitrogen cycle

Answer 30

Fertilizer use and decomposition

Question 31

Phosphorus cycle

Answer 31

Essential to living organisms. Forms part of important life molecules (DNA, RNA, ATP)

Question 32

Phosphorus

Answer 32

Remains mostly in sediments. Mostly inorganic phosphate until released as sediment wears down

Question 33

Symbiotic Relationships

Answer 33

Mutualism, parasitism, commensalism

Question 34

Commensalism

Answer 34

One organism is benefited and one is neutral

Question 35

Mutualism

Answer 35

Both organisms benefit

Question 36

Parasitism

Answer 36

One organism benefits and one is harmed