Ecology Quiz Flashcards
Primary succession
Occurs in essentially lifeless areas- regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rock left from a retreating glacier.
Producers release carbon dioxide into the atmosphere during the process of photosynthesis
True or false?
False
Secondary succession
Occurs in areas where a community that previously existed has been removed; it is typified by smaller scale disturbances that donor eliminate all life and nutrients from the environment
Where do plants get nitrogen from?
Soil
What do forest fires do to nitrogen content?
Nitrogen fertilizers and forest fires add huge amounts of nitrogen Intihuatana e soil and nearby lakes and rivers.
What does water full of nitrogen do?
Causes plants and algae to grow very fast then die all at one when there are too many for the environment to support (carrying capacity)
The nitrogen clue incvolves decomposers, producers, and consumers. Which of these organisms converts gaseous nitrogen to usable nitrogen?
Producers
Most of earths carbon is restored where?
The ocean
What human actions have cases the biggest imbalance in the water cycle?
Indirectly causing glaciers to melt
The producers that play a major part in the nitrogen cycle are known as
Legumes
Carbon is vital to biotic factors because
It is required in photosynthesis which is the base of many food webs
It is required in respiration which produces cellular energy (ATP)
It makes protein and DNA, which allows cells to function
What is true of pioneer species like lichen?
Pioneer species are able to live in low nutrient environments
Pioneer species are unable to outcompete more complex producers
Which is not an example of an abiotic, naturally occurring disturbance?
Migrations
What is an example of a biotic naturally exciting disturbance
Extinctions
What is one difference between primary and secondary succession
Secondary succession begins on soil and primary succession begins on newly exposed surfaces
