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Brian is a marine biologist researching photosynthetic activity in the ocean. He travels in a submersible to an area that is dimly lit. However, despite the light, he finds no photosynthetic organisms. Which zone of the ocean is he in?

A.

bathypelagic

B.

mesopelagic

C.

neritic

D.

epipelagic

Respuesta :

(B) is the correct option

Explanation:

  • The area between 200 and 1,000 meters (656 and 3,280 feet) is the mesopelagic or “twilight” zone  
  • Light intensity in this zone is severely reduced with increasing depth, so light penetration is minimal
  • About 20 percent of primary production from the surface falls down to the mesopelagic zone
  • There are no plants in this zone, because there is not enough light for photosynthesis
  • Octopus, squid, and the hatchet fish are some of the animals that can be found in this zone
  • Many animals in this zone have thin bodies that help them hide from predators
  • Some animals that live in this zone make their own light with bioluminescence
  • They make light with special organs in their bodies called photophores which give off a greenish light
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Answer:

B

Explanation:

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