18 Questions
What is the study of the relation of organisms or groups of organisms to their environment called?
Ecology
What is the basic source of energy in the aquatic ecosystem?
Light energy
Which study focuses on individual organisms or a single species emphasizing adaptation to the environment?
Autoecology
In which component of the ecosystem does the fixation of light energy and building up of complex substances predominate?
Autotrophic
What do you call an ecosystem where the utilization, rearrangement, and decomposition of complex materials are the primary activities?
Saprotrophic
Which term refers to heterotrophic organisms that ingest other organisms or particulate organic matter in aquatic environments?
Phagotrophs
Which group of organisms is incapable of sustained mobility in direction counter to water currents due to their physical characteristics or size?
Zooplankton
Which type of organisms are the principal primary producers in waterways, converting nutrients to organic living materials through photosynthesis?
Phytoplankton
Which group of organisms includes bacteria, yeast, molds, algae, protozoa, and forms that may develop large colonies like sponges and corals?
Phytoplanktonic
What are animals that are large enough to be seen by the naked eye and live part of their life cycles within or upon substrates in water bodies called?
Macro-invertebrates
Which group of organisms has been proven useful in various studies including reconnaissance surveys, water quality monitoring, and research and development?
Benthos
What term describes an assemblage of various organisms growing in underwater substrata, including bacteria, yeast, molds, algae, protozoa, and forms that may develop large colonies?
Aufwuchs
Which statement best describes homotherms and poikilotherms based on their temperature adaptation?
Homotherms are warm-blooded animals while poikilotherms are cold-blooded animals.
What distinguishes freshwater from brackish water?
Freshwater is an inland body of water, while brackish water has an outlet to the sea.
What term is used to describe organisms that form a coating on submerged objects in aquatic environments?
Aufwuchs
What do you call organisms with a wide range of food preferences?
Neurophagic
What term is used for the transfer of food energy through a series of organisms in an ecosystem?
Trophic level
Which group correctly differentiates plankton from nekton?
Plankton are microscopic organisms, while nekton are macroscopic organisms like fishes.
Test your knowledge of aquatic organisms with this quiz! Identify organisms based on their physical characteristics and mobility in water, as well as those that grow in underwater substrata. Choose the correct options like phytoplankton, zooplankton, benthos, and more.
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