Aquatic Ecosystem MCQs

Aquatic Ecosystem MCQs

Answer these Aquatic Ecosystem MCQs and assess your grip on the subject of Aquatic Ecosystem. Scroll below and get started!

1: The principle characteristic distinguishing marine and freshwater ecosystems is _______.

A.   Temperature

B.   Presence of corals

C.   Presence of fish

D.   Dissolved salt

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

A.   Carbon

B.   Nitrogen

C.   Calcium

D.   Water

E.   Phosphorus

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

A.   Reduction in the competition for resources .

B.   Reduction in the competition for energy ..

C.   Addition in the competition for resources

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

A.   Bark..

B.   Roar.

C.   None

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

A.   Soil

B.   Rock

C.   Water

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

B.   Are descended from one branch of marine reptiles

C.   Once had well-developed hind flippers

7: An ecosystem ________.

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

B.   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

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

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

E.   Is a collection of interacting species living in a specific area

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

A.   The salinity of the water

B.   The amount of sunlight the plants receive

C.   The intensity of the waves along the coast

D.   The extent of human development in the area

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

A.   Have the same niche

B.   Share the same habitat

C.   Are abiotic factors

D.   None of the above

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

A.   Primary consumer.

B.   Secondary consumer.

C.   Decomposer.

D.   Autotroph.

E.   Producer.

11: Eutrophication in lakes is frequently the direct result of __________.

A.   A reduction in the competition for resources

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

C.   Nutrient enrichment such as nitrate and phosphate runoffs from land

D.   Uses organisms to add essential materials to a degraded ecosystem

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

A.   The temperature drops

B.   Seepage from natural sources

C.   The structures provide shelter and safety for fish.

D.   Ions from dissolved salts

E.   Nitrogen and phosphorus

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

A.   T lies in international waters

B.   No single nation is responsible for creating it

C.   Filtering out the plastic will also remove plankton

D.   All of the above

14: A healthy, balanced ecosystem has _______.

A.   Fewer producers than consumers

B.   More quaternary consumers than primary consumers

C.   More producers than consumers

D.   Fewer primary consumers than tertiary consumers

15: It is best to say that marine debris _______.

A.   Is a hazard to marine animals

B.   Degrading ocean health

C.   A pervasive, global pollution problem

D.   All of the above