With reference to an aquatic ecosystems, consider the following pairs:
Components Species
1. Autotrophs : Algae
2. Consumers : Phytoplankton
3. Decomposers : Fungi
Which of the pairs given above is/are correctly matched?
The aquatic system as small as a pond, performs all the functions of any ecosystem and of the biosphere as a whole.
The abiotic component is the water with all the dissolved inorganic and organic substances and the rich soil deposit at the bottom of the pond. The solar input, the cycle of temperature, day-length and other climatic conditions regulate the rate of function of the entire pond.
The autotrophic components include the phytoplankton, some algae and the floating, submerged and marginal plants found at the edges.
The consumers are represented by the zooplankton, the free swimming and bottom dwelling forms.
The decomposers are the fungi, bacteria and flagellates especially abundant in the bottom of the pond.