Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1306-4967-8 |
Объём: | 276 страниц |
Масса: | 442 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 2 |
In botany, a drupe is a fruit in which an outer fleshy part surrounds a shell of hardened endocarp with a seed inside. These fruits develop from a single carpel, and mostly from flowers with superior ovaries. The definitive characteristic of a drupe is that the hard, lignified stone is derived from the ovary wall of the flower. Other fleshy fruits may have a stony enclosure that comes from the seed coat surrounding the seed, but such fruits are not drupes. Some flowering plants that produce drupes are coffee, jujube, mango, olive, most palms, pistachio, and all members of the genus Prunus, including the almond, apricot, cherry, damson, nectarine, peach, and plum. Drupes, with their sweet, fleshy outer layer, attract the attention of animals as a food, and the plant population benefits from the resulting dispersal of its seeds. The endocarp is often swallowed, passing through the digestive tract, and returned to the soil in feces with the seed inside unharmed; sometimes it is dropped after the fleshy part is eaten.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.