What are the 2 divisions of the photic zone?

July 2023 · 6 minute read

What are the 2 divisions of the photic zone?

Why is aphotic zone important? At the bottom of lakes and ponds, bacteria in the aphotic zone break down dead organisms that sink to the bottom. Nitrogen and phosphorus are important limiting nutrients in lakes and ponds. Because of this, they are determining factors in the amount of phytoplankton growth in lakes and ponds.

also,  What animals are in the photic zone? These are the fishes, marine mammals, worms, sponges, molluscs, sea stars and reptiles. While some of these large animals feed on fish, others, such as the baleen whale, feed on plankton.

What is the temperature of the photic zone? What is the temperature of the photic zone? 104 to 27 degrees F. On average, it extends to about 660 feet (200 meters); the depth of the ocean averages about 13,000 feet or 4,000 m.

What is in the sunlight zone?

The upper 200 meters of the ocean is called the euphotic, or “sunlight,” zone. This zone contains the vast majority of commercial fisheries and is home to many protected marine mammals and sea turtles. Only a small amount of light penetrates beyond this depth.

similary Which zone receives light from the sun?

The top zone is the euphotic or sunlit zone. This is the ocean zone that sunlight penetrates. Because this zone gets sunlight, photosynthesis can occur and plants can grow here. The sunlit zone goes down to about 660 feet.

What plants live in the aphotic zone? There are no living plants in the aphotic zone. The aphotic zone is the part of the ocean that lies at depths below one kilometer. The aphotic zone is devoid of sunlight. Plants cannot live in the aphotic zone because they need light to make their food from carbon dioxide and water.

What animal lives in the abyssal zone? What animals live in the abyssal zone? The life that is found in the Abyssal Zone includes chemosynthetic bacteria, tubeworms, and small fish that are dark in color or transparent. It also includes sharks and invertebrates such as squid, shrimp, sea spiders, sea stars, and other crustaceans.

Do sharks live in the photic zone?

Habitat. Deep sea sharks live below the photic zone of the ocean, primarily in an area known as the twilight zone between 200 and 1,000 meters deep, where light is too weak for photosynthesis.

Why do animals live in the photic zone? Most marine life is concentrated in coastal areas and in the upper layers of the oceans where, thanks to the entry of sunlight, plants can perform photosynthesis, thereby generating the vital support for the base of the chain food. These brighter marine sites are known as photic zone.

What happens in a photic part of a body of water apex?

The word photic means referring to light. This the zone of a body of water that light can penetrate and photosynthesis can still occur. It usually starts at the surface and goes to a depth that is about 1% of the light intensity that is found at the surface.

Does the blue whale live in the sunlight zone? Sunlight is the energy that powers all life in the upper level of the ocean. … As a result, this is the open sea zone where most life exists. Blue whales, the largest animals to ever live, cruise slowly through the Sunlit Zone, eating as much as 8,000 lbs (3,628 kg) of tiny krill per day.

What is a fun fact about the sunlight zone?

Sunlit Zone

This zone goes down to about 660 feet deep and is the zone that scuba divers explore, although even they need special diving equipment if they want to dive too deep. Because there is so much sunlight in this zone, this is where most sea animals live.

What is the color of the sunlight zone?

Understanding Ocean Zones: The Sunlight Zone

You can see the most fantastic array of colors; reds, pinks, purples, bright yellows, oranges, blues, greens.

At what depth does the photic zone end? In this zone, the intensity of light rapidly dissipates as depth increases. Such a minuscule amount of light penetrates beyond a depth of 200 meters that photosynthesis is no longer possible.

Which zone is the deepest part of the ocean? The deepest zone of the ocean, the hadalpelagic zone extends from 19,700 feet (6,000 meters) to the very bottom at 36,070 feet (10,994 meters) in the Mariana Trench off the coast of Japan.

What is the darkest zone in the ocean?

The deepest layer of the world’s oceans gets no sunlight at all. This dark ocean layer is called the midnight zone or the aphotic zone (aphotic means “no light” in Greek). The depth of this zone depends on the clarity or murkiness of the water.

Where is the ocean twilight zone? What is the ocean twilight zone? The ocean twilight zone is a layer of water that stretches around the globe. It lies 200 to 1,000 meters (about 650 to 3,300 feet) below the ocean surface, just beyond the reach of sunlight.

Why are there no living plants in the aphotic zone?

Photosynthesis requires sunlight, and in the aphotic zone, there is little to no sunlight available for photosynthesis. … With little to no sunlight, as well as up to a kilometre away from the surface, the temperature and pressure becomes too unsuitable organisms to survive.

Does the abyss exist? The abyssal zone or abyssopelagic zone is a layer of the pelagic zone of the ocean. “Abyss” derives from the Greek word ἄβυσσος, meaning bottomless. At depths of 4,000 to 6,000 metres (13,000 to 20,000 ft), this zone remains in perpetual darkness. It covers 83% of the total area of the ocean and 60% of Earth’s surface.

Why do more plants grow in the photic zone of the ocean?

Photic Zone is the top layer, nearest the surface of the ocean and is also called the sunlight layer. In this zone enough light penetrates the water to allow photosynthesis. … In this zone only a small amount of light penetrates the water. Plants do not grow here due to the insufficient amount of light.

How deep is the Mariana Trench? It is 11,034 meters (36,201 feet) deep, which is almost 7 miles. Tell students that if you placed Mount Everest at the bottom of the Mariana Trench, the peak would still be 2,133 meters (7,000 feet) below sea level. Show students NOAA’s Mariana Trench animation.

ncG1vNJzZmiZlKG6orONp5ytZ6edrrV5wKucZqyYmnpzecOiraKrmaS7tHnOn2StoJVivam706KaZrKfo7Jw