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Plant physiology

Plant physiology

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basic terminology for plant physiology studies

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Items (48)

  • apex, apical

    at the top or end of

  • haplontic

    the haploid stage is multicellular and the diploid stage is a single cell, meiosis is "zygotic"

  • diplontic

    the diploid stage is multicellular and haploid gametes are formed, meiosis is "gametic"

  • collenchyma

    have thin primary walls with some areas of secondary thickening

  • parenchyma

    have thin primary walls and usually remain alive after they become mature

  • Sclerenchyma

    have thick lignified secondary walls and often die when mature

  • ground tissue

    includes all tissues that are neither dermal nor vascular

  • cortex

    the outermost layer of the stem or root of a plant

  • Pith

    composed of soft, spongy parenchyma cells, which store and transport nutrients throughout the plant

  • Xylem

    vascular transport tissue that primarily transports water and some mineral nutrients

  • Phloem

    living vascular transport tissue that transports organic molecules like sucrose

  • companion cells

    cell with a large number of mitochondriae and ribosomes that is connected to a sieve-tube element

  • sieve-tube element

    found in the phloem, looks like a net or sieve

  • RAM

    root apical meristem

  • SAM

    shoot apical meristem

  • meristem

    The undifferentiated plant tissue from which new cells are formed

  • plasmodesmata

    microscopic channels which traverse the cell walls of plant cells

  • Embryophyte

    informally called land plants because they live primarily in terrestrial habitats

  • haplodiplontic

    life cycle with two stages, one haplontic gametophyte and a diplontic sporophyte

  • flower

    consists of stigma, style, corolla, anther, phillament, calyx, ovary and pedicel

  • pollen

    male gametophyte

  • microsporangium

    where microsporocytes are formed

  • microspore

    formed by a mother cell called the microsporocyte, consists of a generative cell and a tube cell

  • mitosis

    chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus

  • meiosis

    cell division which reduces the chromosome number by half

  • stigma

    mark of the pistill

  • corolla

    crown leaves or petals in a flower

  • anther

    the part of a stamen that contains microsporangiae

  • calyx

    fodder leaves in a flower

  • angiosperm

    a plant that produces seeds within an enclosure, in other words, a fruiting plant

  • gymnosperm

    seeds develop either on the surface of scales or leaves, often modified to form cones, or at the end of short stalks

  • dermal tissue

    epidermis, periderm

  • epidermis

    unspecialized cells, guard cells, trichomes

  • periderm

    cork cells, cork cambium cells, parenchyma-like cells of the phelloderm, sclereids

  • sieve cell

    elongated and tapering cell, primary cell wall, with sieve areas, callose often associated with walls and pores

  • albuminous cell

    living at maturity, associated with sieve cells, numerous plasmodesmal connections with sieve cell

  • tracheid

    prim and 2nd cell wall, lignified, contains pits but no perforations, dead when functional

  • monocot

    one heartleaf

  • eudicot

    two heartleaves

  • root tip

    can be divided into regions of cell division, elongation, maturation

  • vascular cylinder

    consists of the primary vascular tissues and the encirkling pericycle

  • root modification

    aerial roots, air root and fleshy root

  • leaf primordia

    develops into leaves

  • bud primordia

    develops into lateral shoots

  • tunica-corpus

    vegetative shoot apical meristem of most flowering plants have this organization

  • anticlinally

    in planes perpendicular to the surface of the meristem

  • periclinally

    parallell with the apical surface

  • interfascicular regions

    parenchymatous regions between fascicular regions