Phoenix dactylifera, commonly known as date or date palm, is a flowering plant species in the palm family, Arecaceae, cultivated for its edible sweet fruit. Although its place of origin is unknown because of long cultivation, it probably originated from lands around Iraq. The species is widely cultivated and is naturalized in many tropical and subtropical regions worldwide.
In addition to being a crunchy and delicious snack, walnuts are proving to be an important part of a heart-healthy diet. Since walnuts anda re high in plant based Omega-3 essential fatty acids, antioxidents, protein and fiber, they can be used in a low-fat diet to replace animal protein foods that are hight in saturated fat. Research is also showing that a diet rich in plant foods may reduce the risk of cancer, heart disease and diabetes.
A nut is a fruit composed of a hard shell and a seed, which is generally edible. In a general context, however, a wide variety of dried seeds are called nuts, but in a botanical context, there is an additional requirement that the shell does not open to release the seed (indehiscent). The translation of "nut" in certain languages frequently requires paraphrases, as the word is ambiguous.
Fruits are the means by which angiosperms disseminate seeds. Edible fruits, in particular, have propagated with the movements of humans and animals in a symbiotic relationship as a means for seed dispersal and nutrition; in fact, humans and many animals have become dependent on fruits as a source of food. Accordingly, fruits account for a substantial fraction of the world's agricultural output, and some (such as the apple and the pomegranate) have acquired extensive cultural and symbolic meanings.