EVERYDAY SCIENCE

SCIENCE

ENVIRONMENTAL SCIENCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Free swimming organisms such as fish, turtles and whales
A
Nekton
B
Plankton
C
Benthos
D
None of the above
Explanation: 

Detailed explanation-1: -Nekton (or swimmers) are living organisms that are able to swim and move independently of currents. Nekton are heterotrophic and have a large size range, with familiar examples such as fish, squid, octopus, sharks, and marine mammals.

Detailed explanation-2: -The largest group of nekton are chordates and have bones or cartilage. This group includes bony fish, whales, sharks, turtles, snakes, eels, porpoises, dolphins and seals. Molluscan nekton are animals like octopus and squid. Arthropod nekton are animals like shrimp.

Detailed explanation-3: -Examples of nekton include fish and shrimp. Benthos are aquatic organisms that crawl in sediments at the bottom of a body of water. Many are decomposers.

Detailed explanation-4: -#Plankton and #nekton classify two types of marine organisms based on their swimming abilities. Plankton are passive swimmers that “go with the flow” carried along by #ocean currents, whereas nekton are actively swimming organisms that are capable of swimming against the current.

Detailed explanation-5: -Nekton describes animals that can swim against water currents, while plankton are plants or animals that drift in the current. Benthic organism spend their time either under, on or near the surface of the ocean floor.

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