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Biology Vocab Betsy
Terms in this set (27)
primary root found in some plants that grows longer and thicker than other roots
fibrous root system
A root system common to monocots consisting of a mat of thin roots spreading out below the soil surface.
roots that arise above ground
a structure that covers the tip of a root, protecting the root from injury
outer region of an organ
innermost layer of the cortex
The outermost layer of the vascular cylinder of a root, where lateral roots originate.
A chemical substance that an organism must obtain in relatively large amounts
vitamins, minerals, water
Fundamental tissue composed of thin-walled living cells that function in photosynthesis and storage.
A flexible plant cell type that occurs in strands or cylinders that support young parts of the plant without restraining growth
strengthening tissue in a plant, formed from cells with thickened, typically lignified, walls.
Outer layer of skin
A waxy covering on the surface of stems and leaves that acts as an adaptation to prevent desiccation in terrestrial plants.
hollow plant cell in xylem tissue with thick cell walls that resist pressure
To remove the seed(s) of a fruit or vegetable
Structures that, along with tracheids, make up xylem
arteries, veins, capillaries
sieve tube members
Cells in the phloem tissue that lack a nucleus, but are long and cylindrical for conducting sugar water.
in the phloem of a flowering plant, a conducting tube that is made up of a series of sieve-tube members stacked end to end
An end wall in a sieve-tube member, which facilitates the flow of phloem sap in angiosperm sieve tubes.
make up phloem vessels, along with sieve tube elements
Plant tissue that remains embryonic as long as the plant lives, allowing for indeterminate growth.
group of undifferentiated cells that divide to produce increased length of stems and roots
Growth region of a plant that provides secondary growth, increase in girth
adds layers of vascular tissue called secondary xylem (wood) and secondary phloem
replaces the epidermis with periderm, which is thicker and tougher