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  2. Stoma - Wikipedia

    en.wikipedia.org/wiki/Stoma

    Stoma in a tomato leaf shown via colorized scanning electron microscope image A stoma in horizontal cross section The underside of a leaf. In this species (Tradescantia zebrina) the guard cells of the stomata are green because they contain chlorophyll while the epidermal cells are chlorophyll-free and contain red pigments.

  3. Glossary of leaf morphology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_leaf_morphology

    The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). [1] The edge of the leaf may be regular or irregular, and may be smooth or have hair, bristles, or ...

  4. Glossary of botanical terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_botanical_terms

    Dry, one-seeded indehiscent fruit [11] in which the true fruit is not the so-called "berry", but the achenes, which are the so-called "seeds" on the infructescence, e.g. in the genus Fragaria. acicular Slender or needle-shaped. [11] See also Leaf shape. acropetal Moving from roots to leaves, e.g. of molecular signals in plants. acrophyll

  5. Tradescantia zebrina - Wikipedia

    en.wikipedia.org/wiki/Tradescantia_zebrina

    Tradescantia zebrina has attractive zebra-patterned leaves, the upper surface showing purple new growth and green older growth parallel to the central axis, as well as two broad silver-colored stripes on the outer edges, with the lower leaf surface presenting a deep uniform magenta. The leaves are bluish green and usually have two longitudinal ...

  6. Leaf - Wikipedia

    en.wikipedia.org/wiki/Leaf

    A leaf (pl.: leaves) is a principal appendage of the stem of a vascular plant, [1] usually borne laterally above ground and specialized for photosynthesis.Leaves are collectively called foliage, as in "autumn foliage", [2] [3] while the leaves, stem, flower, and fruit collectively form the shoot system. [4]

  7. Guard cell - Wikipedia

    en.wikipedia.org/wiki/Guard_cell

    Photosynthesis depends on the diffusion of carbon dioxide (CO 2) from the air through the stomata into the mesophyll tissues. Oxygen (O 2), produced as a byproduct of photosynthesis, exits the plant via the stomata. When the stomata are open, water is lost by evaporation and must be replaced via the transpiration stream, with water taken up by ...

  8. Epidermis (botany) - Wikipedia

    en.wikipedia.org/wiki/Epidermis_(botany)

    The stomata complex regulates the exchange of gases and water vapor between the outside air and the interior of the leaf. Typically, the stomata are more numerous over the abaxial (lower) epidermis of the leaf than the (adaxial) upper epidermis. An exception is floating leaves where most or all stomata are on the upper surface.

  9. Tradescantia spathacea - Wikipedia

    en.wikipedia.org/wiki/Tradescantia_spathacea

    Tradescantia spathacea, also called the oyster plant, [2] boatlily [3] or 'Moses-in-the-cradle', is an herb in the Commelinaceae family which was first described in 1788. It is native to Belize, Guatemala, and southern México (Chiapas, Tabasco, and the Yucatán Peninsula) and is widely cultivated as an ornamental houseplant; it has become naturalized in parts of coastal Southern California ...

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