NEET BIOLOGY

Detailed explanation-1: -Aquatic biomes are determined mainly by sunlight and concentrations of dissolved oxygen and nutrients in the water. The availability of that sunlight has a direct impact on the productivity and biodiversity of aquatic ecosystems.

Detailed explanation-2: -The availability of nutrients for uptake and use by living organisms depends on the chemical form of the nutrient and the biochemical processes available to the organism. Some blue-green algae and bacteria can utilize nitrogen gas (N2), converting it to organic nitrogen-a process known as nitrogen fixation.

Detailed explanation-3: -The types of organisms in an aquatic ecosystem are mainly determined by the water’s salinity. As a result, aquatic ecosystems are divided into freshwater and marine ecosystems. Freshwater ecosystems include ponds, lakes, streams, rivers, and wetlands.

Detailed explanation-4: -Some aquatic biomes are coral reefs, estuaries, marine and freshwater biomes. These biomes are influenced by salt level, oxygen level, and nutrient availability, including the amount of sunlight needed for photosynthesis. 3.

Detailed explanation-5: -Marine ecosystems are aquatic environments with high levels of dissolved salt. These include the open ocean, the deep-sea ocean, and coastal marine ecosystems, each of which has different physical and biological characteristics.