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Aquatic Ecosystem MCQ

It is best to say that marine debris _______.

Is a hazard to marine animals

Degrading ocean health

A pervasive, global pollution problem

All of the above

Answer

Correct Answer: All of the above

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A healthy, balanced ecosystem has _______.

Fewer producers than consumers

More quaternary consumers than primary consumers

More producers than consumers

Fewer primary consumers than tertiary consumers

Answer

Correct Answer: More producers than consumers

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The great pacific garbage patch will be difficult to physically clean up because _______.

T lies in international waters

No single nation is responsible for creating it

Filtering out the plastic will also remove plankton

All of the above

Answer

Correct Answer: All of the above

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As you descend from the ocean surface to the deeper layers of the ocean ____________.

The temperature drops

Seepage from natural sources

The structures provide shelter and safety for fish.

Ions from dissolved salts

Nitrogen and phosphorus

Answer

Correct Answer: The temperature drops

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Eutrophication in lakes is frequently the direct result of __________.

A reduction in the competition for resources

Many nutrients come from the soil, but carbon comes from the air.

Nutrient enrichment such as nitrate and phosphate runoffs from land

Uses organisms to add essential materials to a degraded ecosystem

Answer

Correct Answer: Nutrient enrichment such as nitrate and phosphate runoffs from land

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A cow's herbivorous diet indicates that it is a(n) __________.

Primary consumer.

Secondary consumer.

Decomposer.

Autotroph.

Producer.

Answer

Correct Answer: Primary consumer.

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In a forest ecosystem, a robin and a squirrel live in the same tree. the two organisms _____.

Have the same niche

Share the same habitat

Are abiotic factors

None of the above

Answer

Correct Answer: Share the same habitat

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The principle difference between where salt marshes and mangrove forests grow is _______.

The salinity of the water

The amount of sunlight the plants receive

The intensity of the waves along the coast

The extent of human development in the area

Answer

Correct Answer: The salinity of the water

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An ecosystem ________.

Is a regional grouping of plants, animals, and other biotic factors

Is the total population of a specific kind of plant, animal, or microbe and all members of which do or potentially can interbreed and produce young

Encompasses all the organisms and the physical and chemical environment within an area

Is a grouping of plants and animals that interacts with one another in a way that causes the grouping to die

Is a collection of interacting species living in a specific area

Answer

Correct Answer: Encompasses all the organisms and the physical and chemical environment within an area

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The fossil record suggests that whales ________.are not closely related to dolphins and porpoises, despite a superficial similarity

Are closely related to land mammals such as pigs, hippos, and cows

Are descended from one branch of marine reptiles

Once had well-developed hind flippers

Answer

Correct Answer: Are closely related to land mammals such as pigs, hippos, and cows

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Organic and inorganic materials, water, air, and living organisms together make up ____________...

Soil

Rock

Water

Answer

Correct Answer: Soil

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One common way to determine what is considered a big cat, is a feline that can ________..

Bark..

Roar.

None

Answer

Correct Answer: Roar.

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In a working ecosystem such as the arctic tundra, all of the following exist except _______. ..

Reduction in the competition for resources .

Reduction in the competition for energy ..

Addition in the competition for resources

Answer

Correct Answer: Reduction in the competition for resources .

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An ecosystem is unlikely to be limited by the supply of _____ because it is obtained from the air.

Carbon

Nitrogen

Calcium

Water

Phosphorus

Answer

Correct Answer: Carbon

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The principle characteristic distinguishing marine and freshwater ecosystems is _______.

Temperature

Presence of corals

Presence of fish

Dissolved salt

Answer

Correct Answer: Dissolved salt

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