Evolutionary history of plants seed model is shared by basically all gymnosperms (literally: "naked seeds"), most of which encase their seeds in a woody cone or fleshy aril (the yew, for example), but none of which fully enclose their seeds. The angiosperms ("vessel seeds") are the only group to fully enclose the seed, in a carpel. Fully enclosed seeds opened up a new pathway for plants to follow: that of seed dormancy. The embryo, completely isolated from the external atmosphere and hence protected from desiccation, could survive some years of drought before germinating. Gymnosperm seeds from the Late Carboniferous have been found to contain
Naked yoga and other ascetic groups in the dharmic religions. A notable example is the order of sadhus known as the Nagas who use nudity as a part of their spiritual practice of renunciation. The word "Nāga" comes from NAG (snake) which signifies power in Hindu philosophy. The word sadhu derives from sadhana meaning spiritual practice. Members of the sect considered nudity a way of rejecting the material side of life. Celibacy and disregard of the harsh outside conditions were among the key ideas of their philosophy. They practiced naked yoga to tame their desires, identify with their physical bodies and to