EOSC - Module E Question and answers correctly solved

EOSC - Module E Question and answers
correctly solved
Why is PHYTOPLANKTON productivity important? - correct answer
✔Responsible for > 95% of photosynthesis in the ocean


What is the PRIMARY PRODUCER near the coast? - correct answer ✔Sea
grasses or seaweeds attached to the benthos


What is the PRIMARY PRODUCER in open ocean / off-shore? - correct
answer ✔PHYTOPLANKTON


What 4 conditions LIMIT LIGHT for PHYTOPLANKTON? - correct answer
✔1) at night
2) in temperate areas during winter
3) at high latitudes (the poles)
4) when phytoplankton are mixed too deep


What 4 factors influence PHOTIC zone DEPTH? - correct answer ✔1)
SEASON
2) WEATHER
3) CONCENTRATION OF PARTICLES
4) CONCENTRATION OF PHYTOPLANKTON


What SEASON has the DEEPEST photic zone? - correct answer
✔SUMMER

, What WEATHER makes the DEEPEST photic zone? - correct answer
✔SUNNY DAYS


What concentration of PARTICLES makes the DEEPEST photic zone? -
correct answer ✔LOW [ ] = CLEAR water


What concentration of PHYTOPLANKTON makes the DEEPEST photic zone?
- correct answer ✔LOW [ ] = CLEAR water


What SEASONS lead to LIMITED NUTRIENTS? - correct answer ✔SPRING
& SUMMER


(sufficient light = HIGH productivity = use up nutrients)


What is the most dominant factor limiting PHYTOPLANKTON productivity in
the epipelagic? - correct answer ✔CANNOT say as it depends on the
varying temporal and spatial factors


What is usually the LIMITING nutrient for PHYTOPLANKTON? - correct
answer ✔NITRATE


What are the USES and INPUTS of OXYGEN in the mixed layer? - correct
answer ✔USES:
1) respiration
2) decomposition


INPUT:
1) photosynthesis