Information om | Engelska ordet COTYLEDONS

Exempel på hur man kan använda COTYLEDONS i en mening

• The name refers to one of the typical characteristics of the group: namely, that the seed has two embryonic leaves or cotyledons.
• In the case of dicot seedlings whose cotyledons are photosynthetic, the cotyledons are functionally similar to leaves.
• They constitute one of the major groups into which the flowering plants have traditionally been divided; the rest of the flowering plants have two cotyledons and were classified as dicotyledons, or dicots.
• Lentil is hypogeal, which means the cotyledons of the germinating seed stay in the ground and inside the seed coat.
• The hypocotyl (short for "hypocotyledonous stem", meaning "below seed leaf") is the stem of a germinating seedling, found below the cotyledons (seed leaves) and above the radicle (root).
• In botany, a seed is described as showing hypogeal germination when the cotyledons of the germinating seed remain non-photosynthetic, inside the seed shell, and below ground.
• In botany, a seed is described as showing epigeal germination when the cotyledons of the germinating seed expand, throw off the seed shell and become photosynthetic above the ground.
• Leaves are ovoid or broad-ovoid, cotyledons die after emergence, and ternate leaves are produced on two single leaves.
• Plants of the genus Conium are eudicots, flowering plants distinguished by their two cotyledons (embryonic leaves) and tricolpate (three-pored) pollen.
• It usually contains a seedling surrounded by two cotyledons (seedling leaves), enclosed in a tough shell known as the pericarp, and borne in a cup-shaped cupule.
• An end stage embryo has five major components including the shoot apical meristem, hypocotyl, root meristem, root cap, and cotyledons.
• Studies using Brassica rapa indicate that the light quality and ratio available to seedlings is sensed in the cotyledons, which upregulates the production of auxin.
• A typical young seedling consists of three main parts: the radicle (embryonic root), the hypocotyl (embryonic shoot), and the cotyledons (seed leaves).
• Acotyledon is used to refer to seed plants or spermatophytes that lack cotyledons, such as orchids and dodder.
• The eudicots, Eudicotidae, or eudicotyledons are a clade of flowering plants (angiosperms) which are mainly characterized by having two seed leaves (cotyledons) upon germination.
• A common misconception is that the epicotyl, being closer to the apex of the plant, is the first part to emerge after germination - rather, the hypocotyl, the region of the stem between the point of attachment of the cotyledons and the root - forms a hook during hypogeal germination and pushes out of the soil, allowing the more delicate tissues of the plumules and apical meristem to avoid damage from pushing through the soil.
• The seedling leaves are crowded above the cotyledons and linear to spathulate in shape, with recurved and deeply serrated margins with v-shaped sinuses, almost dividing the leaves into triangular lobes.
• Female flowers: sepals and petals as in male, staminodes 6, carpels 3, drupes ovoid, endocarp woody, condyle septiform, endosperm ruminate, embryo curved, cotyledons appressed.
• In the fall, the bluebonnets emerge as small seedlings with two cotyledons, and later a rosette of leaves that are palmately compound, with five to seven leaflets 3–10 cm long, green with a faint white edge and hair.
• Twenty-five varieties were tested, with the key nutrients measured being ascorbic acid (vitamin C), tocopherols (vitamin E), phylloquinone (vitamin K), and beta-carotene (a vitamin A precursor), plus other related carotenoids in the cotyledons.

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