Question

1.What color of light is the only one remainingat the base of the coastal photic zone? Which pigments would not be useful in this zone?

2. At what latitudes are nutrients seasonally abundant at the surface?When? Why?

3. Nutrients are also abundant at the surface in the area ofwhat two latitude independentphenomena/features?

4. What types of organisms can causeharmful algal blooms (those that produce neurotoxins).

5. Which of the following is true of the compensation depth? Circle all that apply: base of the photic zone | net primary productivity = 0 | Photosynthesizin g organisms can survive below this depth | Photosynthesis can still happen below this depth, but not enough to supply energy needs of individual

6. At what latitudes are nutrientsnever abundant at the surface? Why?

Answer 1

Question 1- To penetrate the deep water level in photic zone, the light must have in high frequency and less wavelength. Therefore, Violet portion of the visible light has the most capacity to reach at the base of the photic region.

Question 2- The high latitude water has the most nutrient in surface. This is due to the lack of thermocline level here. In low latitude area temperature limits the nutrient level due to higher photosynthetic rate.

Question 3- The low latitude regions like western Amazon lowland and the coastal regions of Atlantic Ocean are capable to have high nutrient zone.

Question 4- Cyanobacteria and red algae are the most causing harmful algal bloom in the earth.

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