Symbiotic Relationships
A bee gets pollen from a flower to make honey. The flower species genetic diversity is increased due to cross pollination
Mutualistic
Herbivores
What is the unit for energy?
kJ or calories
What process is it called in biology when DDT was sprayed in the 60's and caused eggshells to become brittle due to more concentration of the pesticide as it moved up trophic levels.
Biomagnification
Point on a graph where the population has reached the max number that the habitat can support.
K carrying capacity
A relationship in which an herbivore is eating a plant.
Herbivory
The arrow points to the (predator/prey)
Predator
How much energy is lost between each tropic level?
90%
Name a density dependent factor
disease, parasites
loss of oxygen in water from algal blooms
Negative impacts on both parties due to increased energy expenditure.
Competition
Producers are heterotrops T or F
False
If 100,000 kcals are available to a primary consumer, how much is availabe to a tertiary consumer?
1,000 kcal
Name a pioneer species
lichens and mosses
Primary aquatic succession happens because of deposition of
soil
A ramora is a fish that hitchhikes on the side of a shark. The shark is unharmed.
Commensalism
What is the ultimate source of energy?
The sun
If 100,000 kcals are available to a primary consumer, how much is lost between the third and fourth trophic level.
900 kcal
What is the difference between primary and secondary succession?
Secondary starts with soil
What elements in fertilizer cause eutrophication?
Nitrogen and phosphorous
Two organisms living together in a close relationship.
What is the organism called at the top of the energy pyramid?
Apex predator
Loss of a keystone species would lead to a
Trophic cascade
Name a tree that is shade tolerant
maple, poplar, oak
Why is K not a fixed number?
births death/ immigration and emigration