question

Process by whuch energy dervied from solar radiation is used by certain organisims to form organic matte

answer

Photosynthesis

question

Rate at whuch energy is stored by organisiks through foundation of organic matter

answer

Primary productivity

question

Euphotic zone in open ocewn extends from surface down to approximatley

answer

100 meters

question

Highly productive areas of costal upwelling found along the _____ margins of continente. Where surface currants are moving _____ the equator.

answer

Western, toward

question

Wheb compared to costal regions, solar energy extends _____ into the water column and concentration of nutrients are _______ in open ocean

answer

Deeper, lower

question

Nutrients that tend to limit photosynthesis in mariene environment include

answer

B & c

question

The color of light most readily absorbed by water is

answer

Red

question

Characteristic of most tropical open oceans is responsible for low chlorophyl levels in these waters

answer

Low nutrient concentrations

question

What peedect of the oceans biomass repies either directly or indirectly on organic matter supplied by photosyntgetic primary productivity

answer

99.9

question

Which of the followhg nutrients can limit product productivity by phytoplankton

answer

ALL BUT calcium and carbon dioxide

question

What are reaction products of photosynthesis

answer

Oxygen gas and sugar

question

What are the reaction products of respiration

answer

Water & carbon dioxide gas

question

What organisims utlize photosyn

answer

Phytoplankton, autorophs, primary producers

question

Chemical formula for sugar

answer

C6 H12 O6

question

How do plants an animals gain enevery needed to carry out cellular functuons

answer

Utilize energy in sugar

question

Why does costal upwelling lewded to high biological productivity

answer

Brings cold nutrient rich water to the surface where phytoplankton reside

question

Why does costal upwelling occur on the wrst coast of so many continents

answer

Where wind dodection forces surface water seay fr shore

question

When will costal upwelling occur in northern hem

answer

When wind blows away from nortg llu parallel to shore

question

Where is costal upwelling prevalent in south anerica

answer

On the west coast off the shore of peru

question

How do scientists stidy phytoplankton concentrations in the world ocean

answer

Satellite images that caputre chlorophull concentrations in the surface ocean

question

Paralytic shellfish poisoning is caused by a neurotoxin produced by

answer

Dinoflagellates

question

Important mariene autrotripgs that have sillica incorperated into their cells walls are

answer

Diatoms

question

In dead zones resukting from eurrophication animal life is absent due to lack of

answer

Oxygen

question

Which is largest river in north america responsible for large dead sone that forms each summer in gulf of mexico

answer

Mississippi river

question

What does eutrophication do

answer

When there wre excess nutrients in the water

question

Why do waters become anoxic in a dead zone

answer

Bacteria thay decompose the dead algae use up all the oxygen in the water

question

Where are dead zones most likely to develop

answer

Where river driving arews with high human population densities dischsrge into the ocean

question

How migh the development of dead zones be contrilled

answer

ALL but by adding more nutirents

question

Or the following types of organsimd whicj wre examples of microscopic algae

answer

Dinoflaggletss, cocolitphotee, diatoms

question

Scientists currently have documented the existence if more than ____ dead zones world wide

answer

500

question

Which of the following locations are exceptions to the general rule that productivity is steady and low in tropical regions

answer

Equatorial upwelling, coral reefs, costal upwelling

question

Which of the following about oceanic productivity is true

answer

Incredibly high productivity in summer, nutrient concentrations l, productivity limited by lack of sunshine

question

Primary producers known as

answer

Autotrophs

question

Which ecosystem is most productive

answer

Freshwater swamps and marshes

question

Wha is the standard unit used to measure productivity

answer

Grams of carbon per square meter per year

question

Why are algae beds coral reefs and tropical rainforests so productive

answer

Have ample access to sunlight

question

Which ecosystem is least productive

answer

Open ocean

question

In the middle latitude oceans, primary productivity is limited by

answer

Available sunlight, nutrient supply

question

Which of the following statements about oceanic productivity is true

answer

In tropical ocean limited by lack of nuttirents, fall bloom limited by lack of sunlight, in spring bloom by lack of nutrients

question

If primary photosynthetic productivity in a given area of the ocean is 300g how much organic matter aded

answer

3 a g

question

In low latitude oceans primary productivity is limited by

answer

Nutrient supply only

question

Which of the following ecosystems has the highest average of net primary productivity

answer

Freshwater swamp and marsh

question

In polar region oceans primary productivity is limited by

answer

Available sunlight only

question

Percentage of euphoric zone biomass that reaches deep ocean is approximately

answer

1

question

Examine the 5 words and determine relationship. Which doesn't fit

answer

Bigeochemical cycle

question

Efficiency of tropic transfer in ecosystems is on average around

answer

10

question

Energy flow in an ecosystem is

answer

Unidirectional

question

Of the following type of organisms which one occupies the lowest tropic level

answer

Photosynthetic bacteria

question

Which is tropic level 1

answer

Phytopla

question

Which are first level consumers

answer

Zooplankton , herbivores

question

Which are topic level 5

answer

Humans, orca whales

question

For every 500,000 units of radiant energy that enter an ecosystem from the sun how many are transferred to top producers

answer

1

question

What is kinetic energy

answer

Energy of movement

question

The shame of biomass pyramid illustrates thatj

answer

There are many more small organisms in ocean

question

Which contain chlorophyll

answer

Diatoms, phytoplankton

question

Which are primary producers

answer

Diatoms, dinoflagellates, cociolithophotes

question

Which are primary carnivores

answer

Sardines, herring

question

How many tunas does it take to make one shark

answer

10 times the mass of the shark

question

Organisms within an ecosystem nourish themselves through either photosynthesis or chemosynthesis

answer

Producers

question

Bacteriovores, carnivores, herbivores and omnivores are types of

answer

Heterotropic

question

The flow of energy through a biotic community is

answer

Noncuclic and unidirectional

question

Modification of ____ have reduced dolphin mortality as bycstch

answer

Purse swine nets

question

Deep water species are becoming endangered at a rapid rate primarily because

answer

Have lower metabolic rates

question

Term bycstcj or incidental catch refers to

answer

Non target species that are caught along with commercial species

question

What word doesn't fit pattern: carnivorous ...deposit... filter... suspension...autropic

answer

Autrophic

question

Is overdosing a problem

answer

Yes over 80%

question

How much fish do humans harvest from ocean

answer

145 billion poounds

question

Bycatch

answer

Fish that are caught in addition to the desired catch

question

Targeted by trawl nets

answer

Flounder cod shrimp

question

Which become bycatch

answer

Sharks, dolphins/turtles/birds

question

Overfishing of large predatory sharks has unintentionally resulted in

answer

Excessive marcoslgal growth on coral reefs

question

Which of the following about fisheries are true

answer

Have removed 90% of large marine predatory species, 80% over fished l, will be depleted by 2048

question

If you are concerned about purchasing fish from health thriving fisheries which should you avoid

answer

Cod, Atlantic

question

Recent research has indicate that about ___ percent of seafood sold with a sustainable level is not meeting the criteria of sustain ability

answer

25

question

Which of the following is not a problem currently facing fisheries management

answer

Restrictions on the number of new fishing vessels

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