NEET BIOLOGY

Detailed explanation-1: -Benthic-also called the bottom of ocean; it has greater variability. Pelagic-termed as a near water environment, especially water close to land that is affected by runoff and the influence of tides.

Detailed explanation-2: -The benthic zone is the lowest ecological zone in a water body, and usually involves the sediments at the seafloor. These sediments play an important role in providing nutrients for the organisms that live in the benthic zone.

Detailed explanation-3: -Note: The term benthic refers to anything associated with or occurring on the bottom of a body of water. The animals and plants that live on or in the bottom are known as the benthos.

Detailed explanation-4: -This zone is characterized by low temperature and high pressure. Such conditions are not optimum for sustaining vast flora and fauna found in this zone. The sediment layers of the benthic zone help in recycling the nutrients that helps in the survival of the aquatic life in the upper column.

Detailed explanation-5: -The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers.