B1 Quiz Flashcards
what is the level of hierarchy?
indivudal, population, community and ecosystem
what are the 4 parts to the soil
litter(upper layer) - partially decomposed leaves and grass
topsoil( under litter)- small particles of rock mixed with decaying plant an danimal matter called humus
subsoil- under topsoil- more rock particles with other small amounts of organic matter
bedrock (beneath soil ) composed of rocks
4 factors affecting terrestrial ecosystem
- soil
- avaaible water- determined by perciptation, duration it stays in soil and how much is collected beneath soil
temp (migration and hibernation)
sunlight- vary between and within ecosystems
4 factors affecting aquatic ecosystems
chemical enviornment- amount of dissovled chemicals and oxygen
temp/ sunlight- affected by depth of water
water pressure- water is dense and hard to move through deeper water pressure increases
seasonal variations
seasonal variations in water
most dense at 4 degrees then colder becomes less dense
winter- ice and snow covers acts as insulatoprs, enviornment under is very stable
spring- oxygen now passes into water
summer- upper level of lakes warms up
what is the littoral zone in lakes/ponds
edges of ponds and lakes, shallow warm water
lots of rooted aqautic plants
what is the limnetic zone in lakes/ponds
open water, extends to area where light cannot reach
numerous consumers/ plants
very biologically active
what is the profundal zone in lakes/ponds
not found in ponds
no light no photosyntheis
possibly some chemosynthesis
low o2 levels
what is the benthos zone in lakes/ponds
all bodies of water possess this
bottom of lakes and ponds
abiotic limmiting factors (7)
- temp
-percipitaion/ humidty
-length of growing season - amount of sunlight
-availibility of water - availbility of nutrients and soil
- amount of oxygen
biotic limmiitng factors
- comp for resources
- parasites
-predation
species
group of organisms that can interbredd and produce fertile offspring
habitat
enviornment in which a species normally lives of the location of a living organism
population
group of organisms of the same species who live in the same area at the same time
community
group of populations of different species living and interacting with each other
ecosystem
community interacting with abiotic enviornemnt
ecology
study of relashionships between living organisms and between organisms and their enviornment
what are the 3 domains of life
bacteria: unicelluar, lack membrane bound nucleaus, reproduce asexually
archaea; unicelluar, lack membrane bound nucleas, asexual reproduction, lives in extreme enviornements
eukarya: unicelluar to multicelluar organisms, membrane bound nucleas, sexual reproduction
what is the organization of species from broadest to most specific
domain
kingdom
phylum
class
order
family
genus
species
rule for bionomial nomenculture
genus is capitalized
species is not
whole name is underlined or italized if typing
