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cotyledon

XDict

n. 子叶,瓦松属

PyDict

子叶,瓦松属

WordNet (r) 3.0 (2006) (WordNet)

cotyledon
n 1: embryonic leaf in seed-bearing plants [synonym: {cotyledon},
{seed leaf}]

The Collaborative International Dictionary of English v.0.48 (gcide)

Cotyledon \Cot`y*le"don\ (k?t`?-l?"d?n), n. [Gr.??? a cupshaped
hollow, fr. ???. See {Cotyle}.]
1. (Anat.) One of the patches of villi found in some forms of
placenta.
[1913 Webster]

2. (Bot.) A leaf borne by the caulicle or radicle of an
embryo; a seed leaf.
[1913 Webster]

Note: Many plants, as the bean and the maple, have two
cotyledons, the grasses only one, and pines have
several. In one African plant ({Welwitschia}) the
cotyledons are permanent and grow to immense
proportions.
[1913 Webster]

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Cotyledon - Wikipedia
The cotyledon of grasses and many other monocotyledons is a highly modified leaf composed of a scutellum and a coleoptile The scutellum is a tissue within the seed that is specialized to absorb stored food from the adjacent endosperm
Cotyledon | Definition, Description, Function, Examples, Facts . . .
Cotyledon, seed leaf within the embryo of a seed Cotyledons help supply the nutrition an embryo needs to germinate and become established as a photosynthetic seedling and may themselves be a source of nutritional reserves or may aid the embryo in metabolizing nutrition stored elsewhere in the seed
Cotyledons Explained: Your Seedling’s First Leaves
While “cotyledon” refers to seed leaves in all plants, the Cotyledon genus itself includes quirky succulents like “Bear’s Paw ” They’re part of the Crassulaceae family—totally separate from your everyday veggies or flowers
COTYLEDON Definition Meaning - Merriam-Webster
The meaning of COTYLEDON is the first leaf or one of the first pair or whorl of leaves developed by the embryo of a seed plant How to use cotyledon in a sentence
What Are Cotyledons In Plants? - BackyardDigs
What Is A Cotyledon? A cotyledon is a part of a plant seed More specifically, a cotyledon is part of the seed embryo and plays a crucial role in a plant’s germination process Once a plant seed sprouts and begins to grow, the cotyledon pops up and opens, becoming the plant’s first leaves
Cotyledon - Biology Simple
In botany, a cotyledon is defined as the embryonic leaf within the seed of a plant It is responsible for providing essential nutrients and energy to the developing plant until it can begin producing its own food through photosynthesis
Cotyledon | Definition, Function Types - Lesson | Study. com
What is the simple definition of cotyledon? A cotyledon is the first leaf of a developing plant embryo This is the first part of the plant to emerge from the seed after germination
The Significance of Cotyledons in Plant Development
Cotyledons, also known as seed leaves, are the first leaves to emerge from a germinating seed They are part of the embryo within the seed and can be found in the embryonic axis Cotyledons can vary in shape, size, and number depending on the plant species
What is the main function of cotyledons? - GNA
What Is the Cotyledon? A cotyledon is a significant part of the embryo within a seed Often referred to as "seed leaves," cotyledons are among the first structures to emerge from a germinating seed They are distinct from true leaves, which develop later from the plumule

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