The main source of food is plant. Some are obtained directly from the plant and some time animals are used also the source of food and some times the plants are used as the food source for animals too. The staple food is cereal grains which provide energy to the body worldwide. Rice, wheat, corn are the major production and food source which are produced maximum in the world which is the main source in feeding the livestock. Non plant foods include fungi like mushrooms and some fungi and bacteria which are used for fermentation process which help in process of the preparing of bread, drinks, pickles, yogurt, cheese.

Plants:

Most of the plant parts and plants are eaten as food world wide and the species are also extracted from the plant source which are utilized in the food. Seeds are considered to be good source of the food as they contain nutrients in fact majority of the food consumed by humans are seed based food only. The edible seeds include rice, wheat, corn legumes include lentils,peas, beans etc. Oil seeds are used to prepare oil like flaxseeds, rape seeds, sunflower, sesame.

Fruits are the ovaries which are ripened part of the plant and the seeds within them.Fruits have become the most important part for the humans in the life. Some fruits like eggplant,pumpkin, tomatoes are eaten as vegetables. The vegetables are the most important factor for humans which includes roots, blubs, leafy vegetables, stem vegetables and some varieties of inflorescence vegetables.

Animals:

Animals’ food is consumed either directly or indirectly major item is the meat which is directly taken from the animal and consumed which is the muscle or organs parts. The other food products which are consumed are milk which are produced by the mammary glans they are drunk directly or it is processed as dairy products like butter, cheese, ghee etc. In additional birds lay eggs which are also eaten, bees produce honey which are taken from the nectar of the flower which are also consumed. Some parts of the world consume blood of the animal in the form the sausage of the bold and also as the stews.

Vegans:

Some   culture do not consume animals and they stick to only vegetables they are called as vegans they do forgo animal products too.

Summing up:

The main source of food is plant. Some are obtained directly from the plant and some time animal are used also the source of food and sometimes the plants are used as the food source for animals too.