Marine Science Unit 2 Review Sheet
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Be able to label the ocean zones.
Describe two roles that sunlight plays in the marine environment.
Why do endotherms need to be well insulated from the external environment?
Using the definition of habitat and microhabitat, describe a marine habitat that you are familiar
with and describe a microhabitat within that larger habitat.
What is the difference between the rocky intertidal community and the rocky intertidal
ecosystem?
Think of a marine organism that you are familiar with and describe all aspects of its niche,
including both biotic and abiotic characteristics of the niche.
Define symbiosis. What are the three types, define, and provide two examples for each one. You
must explain the relationship in the examples.
Why do organisms that live in tide pools have to be more tolerant of changes in salinity,
desiccation, and temperature changes than in the open ocean?
Define and draw the three types of dispersion.
What are six abiotic factors that affect the distribution of organisms in an ecosystem? Explain in
detail.
Birth, reproduction, and death are crucial in the marine environment. Describe the three things
that will affect the number of offspring a female will have and provide examples of each one.
Draw a “J” Curve and an “S” Curve and explain what happens in each one. Use examples and
correct terminology.
Define a keystone species and explain in great detail why they are important. Provide two
detailed examples backing up your information.
If the intensity of light at the surface of the ocean was very high, where in the water column
would you expect to see the highest concentration of dissolved oxygen in the sea? Why?
Describe the difference in temperature range between small bodies of water and open ocean areas.
What adaptations do you expect to see in the animals living in either body of water?
Define eutrophication.
What are the important nutrients for photosynthesis? What happens when nutrients are limited?
How much biomass transfers from one trophic level to the next?
How do chemosynthetic organisms obtain food?
What is the primary source of all energy for all primary production to occur?
What are estuaries and why are they important? What type of water are they?
What do organisms that live in the intertidal zone have to deal with daily?
Define community, population, niche, ecosystem, biotic, abiotic, habitat, biosphere, ecology,
optimal range, zones of stress, zones of intolerance, aerobic, anaerobic, salinity, endotherm, and
ectotherm.
What is the most important marine photosynthetic organism?
What is the difference between phytoplankton and zooplankton?
What was oxygen like early on?
Know the difference between the hydrologic, carbon and nitrogen cycles.
Define and briefly describe the three Domains.
Create a food web and label all of the correct trophic levels.
Organisms are classfiied based on a variety of characteristics. List the order / hierarchy in which
organisms are classified from broadest to most specific. Define binomial nomenclature.