Ocean Life and Marine Biology

Difficulty: medium. 10 questions.

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Everything you need to know before you start

Total Questions
10
Published
May 23, 2026
Source Type
topic
Tags(7)
Topic
biology
science
topic
ocean
life
marine
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  1. 1

    Which ocean zone is characterized by sufficient sunlight for photosynthesis to occur?

    • APhotic zone
    • BBathyal zone
    • CAbyssal zone
    • DHadopelagic zone
  2. 2

    What is the primary food source for baleen whales in the ocean?

    • ASmall fish
    • BLarge squid
    • CSeals and penguins
    • DKrill and plankton
  3. 3

    Coral reefs are often called 'rainforests of the sea' due to their high biodiversity. What is the main organism responsible for building the structure of a coral reef?

    • ASea anemones
    • BSponges
    • CPolychaete worms
    • DCoral polyps
  4. 4

    Which of the following terms describes microscopic organisms that drift in the ocean currents and form the base of many marine food webs?

    • ADemersal
    • BNekton
    • CPlankton
    • DBenthos
  5. 5

    Select all that apply: Which of the following are significant threats to ocean life and marine ecosystems?

    • AOcean acidification
    • BDeep-sea vents
    • COverfishing
    • DPlastic pollution