Intro to oceans - Hilary online test compilation A

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1. 10 The dissolved constituents chloride, sodium, sulphate, magnesium, calcium and potassium account for what per cent (%) of the dissolved constituents in seawater?

  • Greater than 95%
  • Greater than 80%
  • Greater than 99%
  • Greater than 90%
1 of 10

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2. Which one of these does NOT display bio-limiting behaviour

  • Phosphate
  • Dissolved inorganic Carbon
  • Silicate
  • Nitrate

3. Which one of these is NOT a macronutrient

  • Iron
  • Silicon
  • Phosphorous
  • Nitrogen

4. What is the definition of remineralisation?

  • The uptake of nutrients and other dissolved materials by phytoplankton.
  • The transfer of matter as a result of molecular motion.
  • The dissolution of "hard parts" (opal, calcite) or the oxidation (breakdown) of "soft part" (organic matter) that leads to the solubilisation of nutrients
  • Formation of solids from dissolved materials

5. What is decribed by "The process a plant uses to combine sunlight, water, and carbon dioxide to produce oxygen and sugar (energy)".

  • Primary production
  • Respiration
  • Photo-oxidation
  • Remineralisation

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