Question

The zone at the edge of a lake or ocean which is alternatively exposed to air and immersed in water is called
(a) Pelagic zone
(b) Benthic zone
(c) Lentic zone
(d) Littoral zone

Answer 1

Hint The oceanic zone is traditionally defined as the area of the ocean beyond the continental shelf, but it is more commonly referred to as starting as water depths drop below 200 metres, seaward from the coast into the open ocean with its Pelagic zone.

Complete step by step answer:
Zones of oceans:
-The shallow coastal zone is known as the littoral zone. This zone has light all the way to the bottom. As a result, producers can be found throughout this zone, from the top to the bottom. Along the shoreline, there is rooted vegetation. Consumers are also available throughout this zone, from the top to the bottom.
-The pelagic zone encompasses all waters beyond the continental shelf, essentially the whole ocean. The pelagic zone is normally chilly, yet it's difficult to estimate a temperature range since, like ponds and lakes, there's thermal stratification in the pelagic zone, with warm and cold ocean currents constantly mixing.
-The benthic zone is the area beneath the pelagic zone, however it does not extend to the ocean's deepest depths (see abyssal zone below). Sand, slits, and/or dead organisms make up the bottom of the zone. Because light cannot penetrate the deeper water, temperature drops as depth increases toward the abyssal zone.
-The abyssal zone is the deepest part of the ocean. The water in this area is extremely cold (about 3° C), highly pressurised, and abundant in oxygen, but deficient in nutrients. Many invertebrates and fish species live in the abyssal zone. In the abyssal zones along the ocean floors, mid-ocean ridges (spreading zones between tectonic plates), typically with hydrothermal vents, can be discovered.

So, the correct answer is option D.

Note: Most man-made lakes require the littoral zone, which is the area along the coastline where aquatic vegetation grows. This is because wildlife habitat, water quality, and erosion management are all vital components in maintaining a healthy ecosystem in a lake.