Question

Plants are responsible for a very important energy transformation, as shown. Which energy transformation does the picture best illustrate?

radiant to chemical
nuclear to mechanical
chemical to thermal
mechanical to chemical

Answer 1

The most appropriate answer would be radiant to a chemical.

Plants are chlorophyll-containing photosynthetic organisms.

Thus, they convert solar or radiant energy into chemical energy under the process termed as photosynthesis.

It is processed by which plants synthesize their food (glucose or chemical energy) from water and carbon dioxide in presence of sunlight (radiant energy) and chlorophyll.

6CO₂ + 6H₂O + solar energy → C₆H₁₂O₆ + 6O₂

Answer 2

The correct answer is (a) radiant to chemical

Except for the deep sea hydro- thermal ecosystem, sun is the only source of energy for all ecosystems on earth. Plants capture only 2-10 per cent of the sun radiation and transmit it in the form of chemical energy. All organisms are dependent for their food on producers (plants), either directly or indirectly. So there is flow of energy from sun (radiant energy) to producers and then to consumers (chemical energy).