ECOLOGY EXAM QUESTIONS Flashcards
OUTLINE HOW ENERGY FLOW THROUGH AN ECOSYSTEM
producers/autotrophs convert light energy into chemical energy/ make food by photosynthesis
such as sugar/organic compounds
producers eaten by primary consumers, these by secondary consumers
energy moves up trophic levels
only 10% of the energy is passed along food chain
energy lost in the form of heat
cell respiration
not digested
death of organisms
passed to detritivores/ decomposers/ saprophytes
energy is not recycled
AQUATIC AND OTHER ENVIRONMENTS ARE BEING AFFECTED BY A GLOBAL RISE IN TEMPERATURE. OUTLINE THE CONSEQUENCE OF THIS ON THE ARTIC ECOSYSTEMS.
warming results in melting ice/ loss of ice habitats
raising sea levels/floods/destroys coastal habitats
warming of habitat would change species that can be supported
decrease in size of populations/ possible extinction
temperate species move/adapt
change in distribution of species/change in migration patterns
ecological changes will affect higher trophic levels/food webs/ food chains
