[ 357 ] Life Science GED ® TEST SCIENCE FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • TRÓPHIC Examine the trophic levels of a marine food web in the diagram. The trophic pyramid groups organisms by the role the organisms play in the food web. e.g., shark, dolphin, albatross TOP CARNIVORES HEAT ENERGY LOSS 3rd LEVEL CARNIVOROUS CONSUMERS e.g., squid 2nd LEVEL CARNIVOROUS CONSUMERS e.g., larger fish DECOMPOSERS 1st LEVEL CARNIVOROUS CONSUMERS e.g., juvenile stages of larger fish, smaller fish, crustaceans, sea stars HERBIVOROUS CONSUMERS e.g., zooplankton, cockles PRIMARY PRODUCERS SUN’S e.g., phytoplankton, seaweed ENERGY Write the appropriate answers on the lines. Zooxanthellae are described in the passage as __________. Based on the trophic levels identified in this pyramid, zooxanthellae would be classified as ___________.