cotyledon in formation before the accumulation of the reserves seen at Judas-tree (Cercis siliquastrum)

The seed leaf (Greek: κωτυλυδών) is a important a share of the embryo within the seed of a plant. Upon germination, a seed leaf ordinarily becomes the embryonic number one leaves of a seedling. A total of seed leaf present is 1 characteristic utilized by plant scientist to classify a flowering plants (angiosperms). Coinage by owning 1 seed leaf come known as monocotyledonous (or, "monocots") & laid in the Class Liliopsida. Plants by owning ii embryonic leaves come termed dicotyledonous (dicots) and situated in the Class Magnoliopsida.

A seed leaf of grasses & many more monocot is extremely modified and composed of the scutellum & the coleoptile. A scutellum occurs as tissue in a seed that is specialized to take in stored food from either a adjacent endosperm. A coleoptile occurs as hard cap that covers a plumule (precursor to the stem & leaves of the plant).

Gymnosperm seedlings also st& seed leaf, and which are actually often many (multicotyledonous) however variable. E.g., the pine seedling has from Five to 20 or even therefore narrow seed leaf forming a whorl at the top of the hypocotyl (a embryonic stem) surrounding the plumule.

A seed leaf can be short-lived, lasting simply times fallowing emergence, or even even lasting, enduring a year or thomas more on the plant. A seed leaf contain (or even in a out break of gymnosperms & monocot, develop access to) the stored food reserves of the seed. When these reserves come utilized higher, a seed leaf will turn green & start photosynthesis, or can wither when a number 1 confessedly leaves require across food production for the seedling.

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