Question

Which is the reason for the highest biomass within the aquatic ecosystem?
(A) Nano plankton, blue-green algae, green algae
(B) Sea greens and slime molds
(C) Benthic and brown algae
(D) Diatoms

Answer 1

Hint: Marine ecosystems cover approximately 71% of the surface and contain approximately 97% of the planet's water. They produce 32% of the world's net primary output. Aquatic ecosystems are often distributed into many zones counting upon water depth and shoreline features.

Complete answer: The benthic region includes all the ocean floors from the wave-washed shore-line to the best depths. Depending upon the penetration of sunshine it's subdivided into two main zones: the lighted or littoral and therefore the deep-sea system. thanks to an abundance of sunshine, water, oxygen, CO$_2$, and limited salinity of water, the zone is characterized by the exorbitant growth of plants. The dense growth of vegetation, on the opposite hand, provides shelter and food for animals. a good sort of algae, few sorts of grass, and animals of each phylum of the Animalia are represented during this region.
Nanophytoplankton is especially a small phytoplankton with sizes between 2 and 20 µm. They're the autotrophic part of nanoplankton. Blue-green algae are normally present in bodies of water and customary in Minnesota. this sort of bacteria thrives in warm, nutrient-rich water.
Therefore, the right answer is Option C, i.e., Benthic and alga.

Note: Aquatic biomass pyramids indicate the comparative level of biomass at each of the trophic phases for ocean ecosystems. Aquatic biomass pyramids tend to be inverted thanks to the dynamics of the producers and consumers. Many marine ecosystems believe phytoplankton as their primary producer.