Final Study Guide

Final Study Guide - Ocean Final Study Guide 1 What is a...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Ocean Final Study Guide 1. What is a population? How does it differ from a community? Population: group of same species occupying the same area Community: population of all species that occupy same habitat and interact with one another 2. What is a trophic pyramid? How does it differ from a food web/chain? Trophic pyramid: feeding hierarchy of organisms o producers (bottom = primary producers) heterotrophs/herbivores (middle = primary consumer) carnivore (top = top consumer) Food web: group of organisms linked by complex feeding relationships in which the flow of energy can be followed from primary producers through consumers 3. What conditions are necessary for rapid growth of phytoplankton? Phytoplankton : minute, drifting photosynthetic organisms produce 90%-96% of oceanic carbs Polar regions need more light Mid-latitudes need more light and nutrients Tropics need more nutrients Nutrients most abundant nearest continents from land runoff and upwelling 4. Where does the maximum level of primary productivity occur in the photic zone? Photic zone: uppermost layer of seawater lit by the sun Abundant small organisms and light scattering particles – extends about 100 m Max. level not directly at surface – about 4 m = most primary productivity Occurs in the euphotic zone (in photic zone) 2% of oceans volume but nearly all marine life depends on it Upper productive layer of ocean 5. What is a nutrient? Give an example. Nutrient: compound required for the production of organic matter Primary nutrients for productivity: Nitrogen and Phosphorus Often depleted by autotrophs during times of high productivity and rapid reproduction 6. What are the factors that control the penetration of light into the ocean? Depends on depth, angle of sunlight approach (location helps determine this), and how much and what type of particles 7. What is the difference between phytoplankton and zooplankton? Phytoplankton smaller simple organisms, producers Zooplankton larger more complex organisms, consumers (heterotrophs) o Planktonic organisms that eat the primary producers
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
o Most numerous primary consumer of the ocean = eat diatom, dinoflagellates, and other phytoplankton 8. What is the difference between a polyp and a medusa? Polyp: sea anemones and corals sedentary animals Medusa: jellyfish predatory animals that swim by the rhythmic contraction of their bell-shaped bodies, catch pray with tentacles Polyp are attached to sea floor and eat what is around them while medusas look for their prey Related because jellyfish is a phase in the lifestyle that creates the polyp They are both examples of cnidarians 9. What is the source of the phosphate that enters the oceans?
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern