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In botany, a stoma (pl.: stomata, from Greek στόμα, "mouth"), also called a stomate (pl.: stomates), is a pore found in the epidermis of leaves, stems, and other organs, that controls the rate of gas exchange between the internal air spaces of the leaf and the atmosphere.
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 ...
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.
carmogilev/Getty Images. Scientific name: Rubus ursinus x Rubus idaeus Taste: Sweet, tangy, floral Health benefits: Boysenberries—a cross between a raspberry, blackberry, dewberry and loganberry ...
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
Leaves tend to have a shorter life span than the stems or branches that bear them, and when they fall, an area at the attachment zone, called the abscission zone leaves a scar on the stem. In the angle ( adaxial ) between the leaf and the stem, is the axil .
The redcurrant or red currant (Ribes rubrum) is a member of the genus Ribes in the gooseberry family. It is native to western Europe . [ 2 ] [ 3 ] [ 4 ] The species is widely cultivated and has escaped into the wild in many regions.
The plant has flexible branches growing up to 2 metres (6 ft 7 in) long covered with red, shredded bark and dark green, oval leaves. [1] Flowers are white or pink, tipped with red, growing in small clusters at the ends of branches, and later maturing into red oval fruits.