What provides the energy for chlorophyll to manufacture food?
The energy is the light shining on the chloroplast.
Light is a form of energy, and the special contribution of the chlorophylls to ecosystems is that they are able to convert light, which cannot be stored, into chemical energy, which can be stored. This chemical energy drives the synthesis of carbohydrates, which are energy-rich organic compounds, from the inorganic compounds carbon dioxide and water.
The kind of nutrition in which an organism prepares its own food and does not depend on other organisms. Such type of nutrition is found in green plants having Chlorophyll, To manufacture their own food in the presence of sunlight. Just contrating to this are Heterotrophs (Heterotrophic nutrition), which depend on green plants or other organisms for food. Autotrophic nutrition provides food for the whole of the living world.
no. humans respire and they do not have chlorophyll. Respiration is the process of releasing energy from food. To do thi you need to have glucose (from the food) and oxygen. Chlorophyll comes into it because plants need to conduct photosynthesis to get glucose. The chlorophyll is needed for this process to happen.