AICE MARINE PAPER 1 EXAM AND
ALL CORRECT ANSWERS.
species - Answer a group of organisms that share similar characteristics and can interbreed
population - Answer group of interbreeding organisms of the same species
community - Answer all of the plants and animals/organisms living in a specific area
ecosystem - Answer community of animals, plants and bacteria with the physical and
chemical environment with biotic and abiotic factors
chemosynthesis - Answer chemosynthetic bacteria use chemical reactions as energy source
photosynthesis - Answer energy source is light
why hydrothermal vents are extreme - Answer high water temps, high pressure, no light, low
pH, very acidic
effect of evaporation on the salinity of seawater - Answer salinity increases with evaporation
3 factors that affect the chemical composition on seawater - Answer run off, volcanic activity,
erosion, upwelling, precipitation, atmospheric dissolution, photosynthesis, respiration
predator - Answer animal that kills/hunts and eats other animals
trophic level - Answer feeding position/ level in a food chain
why is it advantageous for a carnivore to feed on more than one type of organism - Answer
not dependant on one source/alternative food available if normal prey population falls;
how can sedimentation reduce coral growth - Answer sediment covers coral polyp;
prevents feeding;
less light can reach zooxanthellae;
reduced/little photosynthesis;
ALL CORRECT ANSWERS.
species - Answer a group of organisms that share similar characteristics and can interbreed
population - Answer group of interbreeding organisms of the same species
community - Answer all of the plants and animals/organisms living in a specific area
ecosystem - Answer community of animals, plants and bacteria with the physical and
chemical environment with biotic and abiotic factors
chemosynthesis - Answer chemosynthetic bacteria use chemical reactions as energy source
photosynthesis - Answer energy source is light
why hydrothermal vents are extreme - Answer high water temps, high pressure, no light, low
pH, very acidic
effect of evaporation on the salinity of seawater - Answer salinity increases with evaporation
3 factors that affect the chemical composition on seawater - Answer run off, volcanic activity,
erosion, upwelling, precipitation, atmospheric dissolution, photosynthesis, respiration
predator - Answer animal that kills/hunts and eats other animals
trophic level - Answer feeding position/ level in a food chain
why is it advantageous for a carnivore to feed on more than one type of organism - Answer
not dependant on one source/alternative food available if normal prey population falls;
how can sedimentation reduce coral growth - Answer sediment covers coral polyp;
prevents feeding;
less light can reach zooxanthellae;
reduced/little photosynthesis;
