<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2012) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2012) (Learn how and when to remove this template message) </Td> </Tr> <P> A seedling is a young plant 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 . </P> <P> 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 . </P>

Which of the following does the plant need in order for it to germinate and develop