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Study Guide-AICE MARINE AS LEVEL EXAM QUESTIUONS AND ANSWERS
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Study Guide-AICE MARINE AS LEVEL EXAM QUESTIUONS AND ANSWERS
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Study Guide-AICE MARINE AS LEVELEXAM QUESTIUONS AND ANSWERS
Trophic level - Answer -"feeding level" in a food chain or food web
primary producer - Answer -autotrophs (self feeders)
ex: phytoplankton
primary consumer - Answer -herbivores
feed directly on primary producer
secondary consumer - Answer -carnivores that feed on herbivores
tertiary consumer - Answer -carnivores that feed on other carnivores
top predators - Answer -carnivores at the top of the food chain
succession - Answer -gradual change in an ecosystem that occurs over a period of time
EX: volcano erupts/creates a flow of lava/species of coral begins to grow/species
adapts & grows over time
predator - Answer -an animal that catches, kills, and eats another animal
EX: Carnivorous fish eating plankton/fish
prey - Answer -animals that are eaten by predators. they may use survival tactics such
as camouflage
EX: starfish eat shellfish however this predator-prey relationship is necessary to keep
the balance in an ecosystem
keystone species - Answer -Consumers that have a LARGE effect on the overall
biodiversity on an ecosystem...
Example: starfish (If starfish are removed from a community-- mussel & sea urchin
populations dramatically increase)
, shoaling - Answer -large #s of fish in the same species coming together in a "social"
way
shoaling advantages - Answer -1) hydrodynamic frequency
2) more eyes to seek out feed
3) more eyes to seek out predators
4) protection for predators
5) saves energy
6) amount of fish confuses predators
7) increase chance to find a mate
8) easier to reproduce
population - Answer -organisms of the SAME species living together
community - Answer -organisms of DIFFERENT species living together
habitat - Answer -natural environment of an organism
ecosystem - Answer -system of organisms and their NONLIVING environment
biodiversity - Answer -variety of life in an ecosystem
high biodiversity - Answer -STABLE
low biodiversity - Answer -NOT stable
coral reef (biodiversity) - Answer -stable and not extreme environment
high biodiversity
typically found in the photic zone of clear water
sandy shores (biodiversity) - Answer -low biodiversity
not stable
hydrothermal environments (biodiversity) - Answer --extreme environment
-high temperatures & high pressure
-no sunlight
-low biodiversity
-LOW pH
producer - Answer -provide food for other organisms in food web/ food chain
photoautotrophs - Answer -use light energy
chemoautotrophs - Answer -use chemical energy
consumer - Answer -an organism that feeds off of other living organisms
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