Chapter 30
Terms
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- Cuticle
- in plants and insects, a waxy covering that prevents desiccation; in parasitic roundworms, a noncellular layer that protects the worm from the host's digestive and immune systems
- Vein
- a vessel carrying blood to the heart
- Fiddlehead
- tightly coiled new leaves of a fern
- Seed plant
- the protective structure of a plant seed
- Seed
- a plant embryo enclosed in a protective coat
- Vascular tissue system
- the system that includes the xylem and phloem tissues of plants
- Angiosperm
- a flowering plant
- Germinate
- in plans, sprout; the seed embryo begins to grow
- Herbaceous Plant
- an annual plant that is nonwoody
- Vascular plant
- a plant that has xylem and phloem
- Monocot
- an angiosperm with a single cotyledon, parellel veins, and flower parts in multiples
- Sphagnum
- a genus of moss that is a major component of peat bogs in northern parts of the world
- Spore
- a resistant reproductive cell of some organisms, such as certain plants, protists, and fungi
- Thalloid
- a flat body with distinguishble upper and lower surfaces
- Net venation
- in plant leaves, the repeateed branching of vens to form a network of smaller veins
- Endosperm
- the innermost of the three germ laers of the gastrula and develops into the epithelium o the pharynx respiratory tract, digestive tract, bladder, and urethra
- Deciduous
- referring to trees that lose their leaves at the end of the growing season
- Cotyledon
- a seed leaf in a plant embryo
- Woody tissue
- in plants, tissue that isformed from several layes of xylem, usually concentrated in te center of the stem
- Alternation of generations
- a sexual life cycle in plants and algae involving two or more phases
- Cone
- a photoreceptor within the retina that can produce sharp images and distinguish colors; in gymnosperms, a seed-bearing structure
- Phloem
- in plants, the specialized tissue in the vascular system that transports dissolved sugars
- Dicot
- an angiosperm with two cotyledons, net venation, and flower parts in four or fives
- Ephedrine
- a dcongestant drug derived from Ephedra, a genus of desert shrubs
- Strobilus
- a conelike structure of sporangia-bearing leaves
- Gametophyte
- in plants and algae, a multicellular structure that prodces gametes
- Nonvascular plant
- a plant that lacks vascular tissue and true roots, stems, and leaves
- Rhizome
- the underground stem of a fern sporophyte
- Rhizoid
- a rootlike structure attaching gametophyte to soil, rock, or tree bark; a rootlike structure that anchors fungal hyphae to a solid substance
- Ovary
- n egg-producing gonad of a female
- Sporophyte
- one of the diploid generation of land plants that produce spores
- Frond
- the mature leag of fern
- Bryophyte
- a plant that has no vascular tissue and does not form true roots, stems, and leaves
- Gymnosperm
- a seed plant whose seeds are not enclosed by an ovary
- Seedling
- the embryo that is growing into a young plant
- Xylem
- the vascular tissue in plants hattransfers water and minerals from the roots to the leaves