Sunflower in the context of "Isoprenoids"

Germination is the process by which an organism grows from a seed or spore. The term is applied to the sprouting of a seedling from a seed of an angiosperm or gymnosperm, the growth of a sporeling from a spore, such as the spores of fungi, ferns, bacteria, and the growth of the pollen tube from the pollen grain of a seed plant.

In agriculture, a field is an area of land, enclosed or otherwise, used for agricultural purposes such as cultivating crops or as a paddock or other enclosure for livestock. A field may also be an area left to lie fallow or as arable land.

Many farms have a field border, usually composed of a strip of shrubs and vegetation, used to provide food and cover necessary for the survival of wildlife. It has been found that these borders may lead to an increased variety of animals and plants in the area, but also in some cases a decreased yield of crops.

A seedling is a young sporophyte developing out of a plant embryo from a seed. Seedling development starts with germination of the seed. A typical young seedling consists of three main parts: the radicle (embryonic root), the hypocotyl (embryonic shoot), and the cotyledons (seed leaves). The two classes of flowering plants (angiosperms) are distinguished by their numbers of seed leaves: monocotyledons (monocots) have one blade-shaped cotyledon, whereas dicotyledons (dicots) possess two round cotyledons. Gymnosperms are more varied. For example, pine seedlings have up to eight cotyledons. The seedlings of some flowering plants have no cotyledons at all. These are said to be acotyledons.

The plumule is the part of a seed embryo that develops into the shoot bearing the first true leaves of a plant. In most seeds, for example the sunflower, the plumule is a small conical structure without any leaf structure. Growth of the plumule does not occur until the cotyledons have grown above ground. This is epigeal germination. However, in seeds such as the broad bean, a leaf structure is visible on the plumule in the seed. These seeds develop by the plumule growing up through the soil with the cotyledons remaining below the surface. This is known as hypogeal germination.

Helmand (Pashto and Dari: هلمند), known in ancient times as Hermand, Hirmand, and Hethumand, is one of the 34 provinces of Afghanistan, in the south of the country. It is the largest province by area, covering 58,584 square kilometres (20,000 sq mi) area. The province contains 18 districts, encompassing over 1,000 villages, and roughly 1,446,230 settled people. Lashkargah serves as the provincial capital. Helmand was part of the Greater Kandahar region until made into a separate province by the Afghan government in the 20th century. It is largely populated by Pashtuns.

The Helmand River flows through the mainly desert region of the province, providing water used for irrigation. The Kajaki Dam, which is one of Afghanistan's major reservoirs, is located in the Kajaki district. Helmand is believed to be one of the world's largest opium producing regions, responsible for around 42% of the world's total production. This is believed to be more than the whole of Myanmar, which is the second-largest producing nation after Afghanistan. The region also produces tobacco, sugar beets, cotton, sesame, wheat, mung beans, maize, nuts, sunflowers, onions, potato, tomato, cauliflower, peanut, apricot, grape, and melon. The province has a domestic airport (Bost Airport), in the city of Lashkargah that was heavily used by NATO-led forces. The former British Camp Bastion and the U.S. Camp Leatherneck is a short distance southwest of Lashkargah.

A forb or phorb is a herbaceous flowering plant that is not a graminoid (grass, sedge, or rush). The term is used in botany and in vegetation ecology especially in relation to grasslands and understory. Typically, these are eudicots without woody stems.

The eudicots or eudicotyledons are flowering plants that have two seed leaves (cotyledons) upon germination. The term derives from dicotyledon (etymologically, eu = true; di = two; cotyledon = seed leaf). Historically, authors have used the terms tricolpates or non-magnoliid dicots. The current botanical terms were introduced in 1991, by evolutionary botanist James A. Doyle and paleobotanist Carol L. Hotton, to emphasize the later evolutionary divergence of tricolpate dicots from earlier, less specialized, dicots.

Scores of familiar plants are eudicots, including many commonly cultivated and edible plants, numerous trees, tropicals and ornamentals. Among the most well-known eudicot genera are those of the sunflower (Helianthus), dandelion (Taraxacum), forget-me-not (Myosotis), cabbage (Brassica), apple (Malus), buttercup (Ranunculus), maple (Acer) and macadamia (Macadamia). Most leafy, mid-latitude trees are also classified as eudicots, with notable exceptions being the magnolias and American tulip tree (Liriodendron)—which belong to the magnoliids—and Ginkgo biloba, which is not an angiosperm.