Euology Flashcards
Definition of Population?
All the organism of a particular species found in an ecosystem.
Define Community?
All the populations of all the species found in an ecosystem at any one time.
Define Ecosystem?
A distinct, self-supporting system of organisms interacting with each other and the environment.
On a Pyramid of energy how much energy is lost on each trophic level?
You loose around 90% of energy between each level.
What are the advantage of the pyramid of energy?
Energy is directly comparable.
Relative energy flow between different ecosystems can be compared to each other.
Amount of energy lost between levels is easily identifies.
There are not inverted pyramids.
Input of solar energy can be added.
What are the disadvantages of the pyramids of energy?
To determine energy value of organism requires complete combustion.
Still difficult to assigning the organisms to a specific trophic level as well as organisms in the food chains and there is a problem of assigning the decomposers and detritivores to a specific trophic level.
Equation for photosynthesis?
Carbon Dioxide+Water—->Oxygen+Glucose
Equation for Respiration?
Oxygen+Glucose—-> Carbon Dioxide+Water
Draw the Carbon Cycle?
Draw the Nitrogen Cycle?
What is waste called in the carbon cycle?
Detritus
Three type of bacteria/organisms especial to the nitrogen cycle?
Decomposers
Nitrogen fixing bacteria
Nitrifying bacteria
Denitrifying bacteria
Why is Nitrogen needed for living organisms?
Making protein and bacteria.
Why can’t nitrogen be used directly by living organisms?
It is unreactive
What converts nitrogen gas directly into nitrates?
Lightning
