What is the name given to the region where sea meets land?
The intertidal zone is the area where the ocean meets the land between high and low tides. A tide pool within Monterey Bay National Marine Sanctuary. Intertidal zones exist anywhere the ocean meets the land, from steep, rocky ledges to long, sloping sandy beaches and mudflats that can extend for hundreds of meters.
What is an aquatic area where no photosynthesis takes place?
The aphotic zone (aphotic from Greek prefix ἀ- + φῶς "without light") is the portion of a lake or ocean where there is little or no sunlight. It is formally defined as the depths beyond which less than 1 percent of sunlight penetrates.
What name is given to the open ocean?
The pelagic zone, also known as the open ocean, is the area of the ocean outside of coastal areas.
What are estuaries quizlet?
Estuary. a partially enclosed coastal body of water (usually at the mouth of a river) where fresh water from the river and salt water from the sea mix.
Which organism produces most of the food in an aquatic ecosystem?
Phytoplankton Phytoplankton produce most of the food for an aquatic ecosystem.
What intertidal zone do sea anemones typically inhabit?
Sea anemones often live near land: some anemones live in the intertidal zone, which means they are underwater when the tide is high and exposed to the air when the tide is low. Other anemones live below the low tide line, which means they are underwater all of the time.
What is in the photic zone?
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.
What is photic and aphotic zone?
Photic zone receives sunlight which penetrates the photic zone, enabling photosynthesis. The diversity of organisms is high in the photoic zone as it is more favourable for life. The aphotic zone is the portion of the ocean that does not receive sunlight. Sunlight does not penetrate this zone.
What region is the open ocean?
Pelagic Zone Answer: Pelagic Zone-the open ocean not near the coast. Benthic Zone-ocean bottom.
What are the pelagic and benthic zones?
The first major distinction is between the pelagic and benthic zones. The pelagic zone refers to the water column, where swimming and floating organisms live. The benthic zone refers to the bottom, and organisms living on and in the bottom are known as the benthos .
What is the intertidal zone quizlet?
What is intertidal zone? The coastal area above water at low tide and under water at high tide.
What abundant resource did Bangladesh use to construct the dam on the Feni river?
What abundant resource did Bangladesh use to construct the dam on the Feni River? clay, bamboo, and boulders, as well as human resources to complete the work.
Why are photosynthetic organisms found mainly in shallow water?
Because water absorbs light, sunlight that is usable by plants for photosynthesis penetrates only about 100 m into the ocean.
What do you mean by aquatic ecosystem?
An aquatic ecosystem includes freshwater habitats like lakes, ponds, rivers, oceans and streams, wetlands, swamp, etc. and marine habitats include oceans, intertidal zone, reefs, seabed and so on. The aquatic ecosystem is the habitat for water-dependent living species including animals, plants, and microbes.
What is middle tide zone?
This zone is defined as the area between the average high tide and low tide lines on the shore. Therefore it is covered and uncovered by sea water approximately twice a day with each tide. The mid-intertidal zone and its upper limit is easily recognized by its dominant organism-the barnacle. Home.
What is the meaning of littoral zone?
littoral zone, marine ecological realm that experiences the effects of tidal and longshore currents and breaking waves to a depth of 5 to 10 metres (16 to 33 feet) below the low-tide level, depending on the intensity of storm waves.
What is photic and euphotic?
Table of Contents. photic zone, surface layer of the ocean that receives sunlight. The uppermost 80 m (260 feet) or more of the ocean, which is sufficiently illuminated to permit photosynthesis by phytoplankton and plants, is called the euphotic zone.
What is the Disphotic zone?
The disphotic zone is the layer below the euphotic zone. This layer is also known as the twilight zone. In this zone, there is enough light for visual predators to see, and even for some photosynthesis. Howver, the rate of respiration in the disphotic zone is greater than the rate of photosynthesis.
Where is the pelagic zone?
the open sea The pelagic zone is the part of the open sea or ocean comprising the water column, i.e., all of the sea other than that near the coast or the sea floor. In contrast, the demersal zone comprises the water that is near to (and is significantly affected by) the coast or the sea floor.
What is in the midnight zone?
What is the "midnight zone"? The ocean's midnight zone is a region between one and four kilometres deep, where no sunlight at all penetrates the frigid water. With no light, there is no growth of plants or phytoplankton – all animals are thus predators or scavengers.
Which of the following zones has photosynthesis?
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.
Whats the difference between benthic and abyssal zone?
Since the benthic zone is the zone at the bottom, it starts right at the coastline, and carries on along the continental shelf into the deep ocean. The benthic zone in deep waters is equated with abyssal plains. Organisms living in the benthic zone, particularly on the surface of oceans, are known as benthos.
What is in the neritic zone?
The neritic zone is the region of shallow water (200 meters depth) above the continental shelf where light penetrates to the sea floor. Due to the abundant supply of sunlight and nutrients in this zone, it is the most productive ocean zone supporting the vast majority of marine life.
Which mountain ranges resulted from the collision of what is now the Indian subcontinent with Asia?
The Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and continues today. 225 million years ago (Ma) India was a large island situated off the Australian coast and separated from Asia by the Tethys Ocean.
What are the names of the physical features of South Asia that make the region a subcontinent?
- the Himalaya, Karakorum, and Hindu Kush mountain ranges and their southern slopes,
- the Indo-Gangetic plain, and.
- the Deccan plateau.
Why do organisms that perform photosynthesis live only in the surface zone?
Because they need light, phytoplankton live near the surface, where enough sunlight can penetrate to power photosynthesis.
Where are the littoral and benthic zones located and what types of organisms will you find there?
The littoral zone is near the shore and is nutrient rich. Here, aquatic life is diverse and abundant. The benthic zone is the bottom of the lake and is home to Decomposers, insect larvae, and filter feeders such as freshwater clams.
What is Lentic zone?
Lentic ecosystems are those whose water is still, and are made up of ponds, marshes, ditches, lakes and swamps. These ecosystems range in size from very small ponds or pools that may be temporary, to large lakes.
What are the 4 aquatic ecosystems?
Wetlands, rivers, lakes, and coastal estuaries are all aquatic ecosystems—critical elements of Earth's dynamic processes and essential to human economies and health.
What moon phases are present during the spring tide?
During the moon's quarter phases the sun and moon work at right angles, causing the bulges to cancel each other. The result is a smaller difference between high and low tides and is known as a neap tide.