Ecology
What is ecology?
Study of organisms and their interactions with their environment
Difference between autotrophs and heterotrophs.
Autotrophs get energy from the sun. Heterotrophs get energy from eating.
A nonnative organism that causes harm to the environment
Invasive species
Modern classifications are based on
evolutionary lineage/history
Where is Ms. Silance's wedding?
Southern California
Name 3 (of 8) characteristics of living things.
Cells, reproduce, grow & develop, respond to stimuli, homeostasis, evolve, energy, metabolism
How much energy is passed between trophic levels?
10%
The maximum number of organisms an ecosystem can support
Carrying capacity
Scientific name contains what 2 levels of organization
Genus and species
If two different organisms is in the same genus, what other classifications will be the same?
Kingdom, phylum, class, order, family
How do primary producers obtain energy?
Photosynthesis
Any organism following a primary producer is a
type of consumer
How do predator-prey relationships affect population sizes?
If prey increases, predator increases, etc.
Levels of classification from most broad to most specific
Kingdom, phylum, class, order, family, genus, species
What family are humans in?
Hominidae
List the levels of organization of living things from smallest to largest.
Species, population, community, ecosystem, biome, biosphere
In a food chain, arrows indicate
the direction energy is going
How will a species population change if another species is introduced to the same niche?
If competing for the same resources, the carrying capacity of species 1 would decrease
The splitting point in a cladogram represents
A speciation event
What is the name of Ms. Silance's sloth?
Darwin
Name two types of asexual reproduction in marine organisms
Budding, fission
Explain why smaller food chains are more efficient and how this explains the size of the largest marine mammals.
More energy available - allows for greater mass of organisms
List and describe 3 different symbiotic relationships.
Mutualism (+/+), parasitism (+/-), commensalism (+/0)
Describe the meaning of a hashmark on a cladogram
It is a derived characteristic that all organisms following the hash will have
A species that exerts a strong hold on the stability of an ecosystem