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Science Explosion 07
BJU 6th Science - Chapter 6
Question | Answer |
---|---|
Vascular plant | plants with tubelike structures that transport water from the roots to the stem and leaves |
Nonvascular plant | plants without tubelike structures |
Rhizoid | thin, root-like structure of moss (not true root) |
Rhizome | underground stems |
Frond | leafy branch of a fern from rhizome to tip |
Fiddlehead | a fern frond coiled up tightly when growth first begins |
Angiosperm | vascular plants that have flowers and their seeds are protected inside a fruit |
Gymnosperm | vascular plants with no flowers, seeds are usually produced inside a cone |
Annual | angiosperm with only one growing season |
Biennial | angiosperm needing two growing season to fully develop |
Perennial | angiosperms that live for three or more years |
Cotyledon | tiny seed leaves of the plant embryo |
Dicotyledon | two cotyledons in their seeds |
Monocotyledon | only one cotyledon in their seeds |
Taxonomy | branch of science that deals with classifying organisms |
Xylem | tubes that carry water and minerals from the roots to the top of the plant |
Phloem | tubes that carry sugars and food throughout the plant |
Vascular bundle | xylem and phloem tubes grouped together |
Cambium | a layer of cells in the vascular bundle that reproduce to make more xylem and phloem |
Tuber | food storage stem of a plant, ex. potato |
Herbaceous | soft and green stems like those of a flower, generally are annual plants |
Root | anchors the plant in the soil, supports the stem, absorbs water and nutrients, some store starches and sugars for the plant, ex. beets, radishes and sweet potatoes |
Primary root | first root that emerges from the seed |
Taproot | continues to grow from primary straight down into the soil and may have secondary roots branching off it |
Fibrous root | primary root stops growing and the plant develops many thin roots that spread out in all directions with a few that branch downward for water and minerals |
Arial root | never touch the soil due to high humidity |