Correct Answer:
Option A - The basic requirement for the functioning and maintenance of an ecosystem is input of solar energy. Solar energy is the primary source of energy for most ecosystems. It drives the process of photosynthesis, which is the foundation of energy flow in ecosystem. Plants convert solar energy into chemical energy, which then becomes available to other organisms in the food web.
A. The basic requirement for the functioning and maintenance of an ecosystem is input of solar energy. Solar energy is the primary source of energy for most ecosystems. It drives the process of photosynthesis, which is the foundation of energy flow in ecosystem. Plants convert solar energy into chemical energy, which then becomes available to other organisms in the food web.