• Plant Parts
  • Plant Part

    structure and definitions

    function/ examples

    use

    root

    contains xylem and phloem; epidermis, parenchyma, collenchyma, and sclerenchyma. apical meristem located at the tip

    root cap protects ends

    root hairs increase surface area

    tap root: one main root with small roots extending out (ex: carrot)

    fibrous root: all roots approximately the same diameter

    absorbs nutrients and water; anchors plant; stores food; conducts materials to the stem.

    food

    stem

    contains xylem and phloem; epidermis, parenchyma, collenchyma, and sclerenchyma. apical meristem located at the tip

    stolon: horizontal underground stem that extends to spread plants.

    supports leaves, flowers; transports materials between the roots and leaves; storage; photosynthesis; underground storage (potato tubers)

    wood (an accumulation of xylem); food

    leaf

    contains xylem, phloem; epidermis; waxy cuticle; parenchyma, collenchyma, sclerenchyma; palisade and spongy mesophyll; stomata (openings in the underside of the leaf used in gas exchange)

    photosynthesis

    food storage (onions)

    food; spices; oils; waxes; fibers; drugs; insecticides

    flower

    four whorls: calyx made of sepals; used for protection. corolla made of petals; attracts pollinators. androecium made of stamens (anther and filament); produces pollen grains. gynoecium made of pistil (stigma, style, and ovary); produces egg.

    functions in sexual reproduction of angiosperms

    decoration; food

    fruit

    ripened ovary or receptacle

    endocarp, mesocarp, and exocarp

    protects seed; disperses seed

    food

    seed

    cotyledon (embryonic seed leaf): epicotyl; hypocotyl; radicle; seed coat

    protects and feeds plant embryo

    food

    cone

    scales and seeds

    reproductive organ of conifers

    food; decoration

    parenchyma

    basic unspecialized plant tissue

    stores food

    food (apples made of mostly parenchyma tissue)

    collenchyma

    living tissue with thick cell walls

    provides flexible support in young plants, leaves

    food (celery is primarily collenchyma tissue)

    sclerenchyma

    tissue with thickened walls; dead at maturity

    rigid support

    fibers; rope; jute

    gives pears gritty texture

    non-vascular plants

    contain no vessels

    spore-bearing plants

    examples: moss, liverworts.

    need water to reproduce.

    ground cover

    ferns

    vascular spore bearing plants

    frond: leaf

    fiddlehead: new uncurled leaf

    rhizome: horizontal underground stem

    need water to reproduce.

    ornamental

    gymnosperms

    needle or scale-like leaves

    pollen cone: male

    ovate cone: female

    gymnosperm: naked seed

    examples: conifers (pine, spruce, fir); juniper, arbor vitae

    food; building materials (soft woods missing fibers and vessel elements)

    monocots

    angiosperm with one cotyledon

    parallel leaf venation

    flower parts in multiples of threes

    vascular bundles are scattered

    no vascular cambium

    fibrous root system

    do not produce woody tissues

    examples: iris, lily, daffodil, corn, grass

    food; major grains

    dicots

    angiosperm with two cotyledons

    net venation in leaves

    flower parts in fours or fives

    vascular bundles in rings

    vascular cambium present

    tap root system

    may produce wood and bark

    examples: rose, trees, cucumber

    building materials (hardwoods contain tracheids and vessel elements);

    food

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