plant systems Flashcards
shoot system
the system in a flowering plant that is specialized to conduct photosynthesis and reproduce sexually; it consists of the leaf, flower and the stem
root system
the system in a flowering plant, fern, or conifer that anchors the plant, absorbs water and minerals, and stores food
leaf
main photosynthetic structure
some leaves are adapted for support, production, reproduction and attraction
some are edible, sources of waxes and medicines
flower
specialized structures developed for sexual reproduction
contains male and/or female reproductive structures
male - produces pollen grains
female - produces eggs
how are seeds formed?
eggs are fertilized by pollen, after pollination, female flower parts form seeds
wind pollination
flowers are small and drab, but produce a lot of pollen
animal pollination
flowers are large, colourful and fragrant
fruit
the fleshy or dry ripened ovary of a flowering plant, enclosing the seed(s)
stem
supports branches, leaves and flowers and provides a way to transport materials
significant amounts of vascular tissue for carrying substances to and from roots, leaves, flowers and fruits
-SPECIALIZED STEMS
food storage, protection, photosynthesis, reproduction
meristematic cell
an undifferentiated plant cell that can divide and differentiate to form specialized cells
dermal tissue system
forms the outermost layer of a plant. includes epidermal and periderm tissues
epidermal tissues (epidermis)
a thin layer of cells covering all non-woody surfaces of a plant
periderm tissue
tissue on the surface of a plant that produces bark on stems and roots
vascular tissue system
transportation system that moves water, mineral and other chemicals around the plant. like a network of tubes that reaches from the roots, up the stalk and through the leaves
xylem
vascular tissue in plants that transports water and dissolved minerals from the roots to the leaves and stems of the plant