How much of solar energy that fall on plants is converted into chemical energy by photosynthesis?

2-10%

The correct answer is option (4) -2-10%.

Plants capture only 2-10 per cent of the PARs (photosynthetically active radiation) and this small amount of energy sustains the entire living world. The solar energy that falls on plants is converted into chemical energy through the process of photosynthesis. The efficiency of this conversion is influenced by various factors, including the type of plant, environmental conditions, and the availability of resources.

So, it is very important to know how the solar energy captured by plants flows through different organisms of an ecosystem.