nonvascular land plants; the mosses hornworts and liverworts
An underground bud with thickened fleshy leaf scales, as in an onion
Collective term for all the sepals in a flower
A carbohydrate; the chief component of the cell wall in plants
Collective name for all the petals of a flower
A primary leaf of the embryo; a seed leaf
Growth of limited duration, characteristic of floral meristems and leaves
Group of flowering plants characterized by having two seed leaves
A fleshy, indehiscent fruit with a stony endocarp surrounding a usually single seed, as in a peach or cherry.
A young sporophytic plant, before the start of a period of rapid growth (germination in seed plants).
The female gametophyte of angiosperms, generally an eight-nucleate, seven-celled structure; the seven cells are the egg cell, two synergids and three antipodals (each with a single nucleus), and the central cell (with two nuclei)
The inner layer of the pericarp of a fruit.
A tissue, containing stored food, that develops from the union of a male nucleus and the polar nuclei of the central cell; it is digested by the growing sporophyte either before or after the maturation of the seed; found only in angiosperms
Flower with stamens, petals, and sepals attached to the top of the ovary, the ovary inferior to the other floral parts.
A group of four spores formed from a spore mother cell by meiosis (e.g. pollen tetrad)
An elongated, thick-walled water conducting and support cell of xylem. It has tapering ends and pitted walls without perforations; found in nearly all vascular plants.
The loss of water vapor by plant parts; most transpiration occurs through stomata
An enlarged, short, fleshy underground stem, such as that of the potato.
The pressure within a cell resulting from the movement of water into the cell.
A strand of tissue containing primary xylem and primary phloem and frequently enclosed by a bundle sheath of parenchyma or fibers
A cylindrical sheath of meristematic cells, the division of which produces secondary phloem (to the outside) and secondary xylem (to the inside).
Plants that have xylem and phloem.
A vascular bundle forming part of the framework of the conducting and supporting tissue of a leaf or other expanded organ
Arrangement of veins in the leaf blade
A tubelike structure of the xylem composed of elongate cells (vessel elements) placed end to end and connected by perforations. Its function is to conduct water and minerals through the plant body . Found in nearly all angiosperms and a few other vascular plants.
Sprouting on the parent plant, as the seeds of certain mangroves
A ring-like arrangement of similar parts arising from a common point or node
A complex vascular tissue through which most of the water and minerals of a plant are conducted. Characterized by the presence of tracheids and/or vessels
A bilaterally symmetrical flower
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