Topic 5 - On the Wild Side Flashcards
What is a Light-Dependent Reaction?
Using light and hydrogen energy from photolysis to produce reduced NADP and ATP
What is a Light-Independent Reaction?
Uses reduced NADP and ATP to reduce CO2 to carbohydrates
What is Predation?
The relationship between organisms in which one benefits and feeds off of the other
What is a Population?
A group of organisms living in the same area belonging to the same species with the ability to interbreed
What is a Community?
A group of organisms living in the same area, all belonging to different species
What are the Different Abiotic Factors?
- Solar Energy Input
- Climate
- Topography
How is Solar Energy Input Effected?
- Latitude
- Season
- Cloud Cover
(Viral for photosynthesis and acts as an environmental cue for reproduction)
What is Topography?
The slope of land and it’s drainage
What is an Edaphic Factor?
Factors associated with soil pH and the mineral concentration
What is Mutualism?
A relationship between species where both partners benefit.
E.g humans and digestive bacteria
What is a Density Dependent Biotic Factor?
Where the effects depend on the population density. (E.g the larger the population density, the greater the competition between species)
What is an Anthropogenic Factor?
Abiotic or biotic factors that occur because of human activity
What is Primary Succession?
When new habitats form where there has never before been a community
What is Secondary Succession?
When habitats form where an existing community has been cleared
What are Pioneer Species?
The first species to colonise the forming habitat. They can usually cope with extreme conditions (e.g lack of soil or water)
What is a Climax Community?
Usually dominated by trees, this is a stable community that is achieved in succession and is usually unchanged
What is Deflected Succession?
A form of succession that remains stable because of human activity
What is Primary Productivity?
The rate in which energy is transferred into organic molecules in an ecosystem
What is an Autotroph?
Also known as a producer, these are organisms that make their own organic compounds