Plants get their energy from the sunlight.
The source of energy of plants is sunlight.
Sunlight
Mitochondria
sun
Sun is the source of solar energy. Heat is present in solar energy.
The original source of the energy in any combustible plant material is from the sun.
Thermal energy
In an energy source, such as a power plant or a battery, energy is converted from one form to another. For example, in a power plant, mechanical energy from a turbine is converted into electrical energy. In a battery, chemical energy is converted into electrical energy.
The sun!
sunlight
Maybe it is a plant.
The energy source of ethanol is renewable plant material, such as corn, sugar cane, or cellulose from wood or grasses. This plant material undergoes fermentation to produce ethanol, which can be used as a fuel source.