Question

How does the photic zone differ from the aphotic zone?

Answer 1

The ocean can be divided into countless zones relying on the depth and amount of sunlight it receives. Photosynthesis in the ocean requires an ample quantity of sunlight, which occurs only in the photic zone. Only up to this quarter can daylight penetrate to resource the marine biome to photosynthesize. The photic zone is the higher quarter and only extends to about 200 meters.

Complete answer:
The open water of the ocean is termed to as the pelagic realm or pelagic zone. This includes the photic, aphotic, and abyssal zones. Bordering underneath the pelagic region is the benthic realm or benthic zone. The photic region extends from the topmost surface to a depth of 200 meters. This is the sole sector where the marine biome can perform photosynthesis as the daylight can solely penetrate a depth of up to 200 meters and therefore being named aphotic zone.

Beneath the photic quarter is the aphotic zone, the place light does now not penetrate. It extends down to 4000 meters beneath sea level. Most of the ocean is aphotic and lacks photosynthetic organisms.

Even beneath and down the photic region is the abyssal zone. It extends to depths above 4000 meters. This sector has a high temperature, excessive oxygen content, and low nutrient content. Some chemosynthetic organisms inhabit this zone. The photic, aphotic, and the abyssal sector represent the pelagic realm, and below the pelagic realm is the benthic realm. As marine organisms die, they fall to this vicinity and accordingly this region has a very excessive nutrient content.

Note: The oceanic zones are labelled primarily based on their depth and based totally on the amount of mild it receives. The photic zone, aphotic zone, and abyssal zone represent the pelagic realm.
Beneath the pelagic realm is the benthic realm The depth of the ocean varies based on geography. Some oceans and seas are shallow where they solely lengthen to about a few hundred meters whereas other areas such as the Mariana trench extends to about 11,000 meters.