Chapter 9 Flashcards
Deciduous
Plants that lose their leaves every year
Annual Ring
Layer of wood (secondary xylem) usually produced during one growing season.
What are guard cells?
Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata.
Axillary Bud
Bud located in the axil of a leaf
Intercalary meristem
intercalary (at internodes, or stem regions between the places at which leaves attach, and leaf bases, especially of certain monocotyledons—e.g., grasses)
Bulbs
a short stem with fleshy leaves or leaf bases
Internodes
A section or part between two nodes, as of a nerve or stem.
Bundle Scar
markings within a leaf scar at the location where vascular bundles were broken as the leaf petiole detached from the twig.
What is a leaf scar?
The mark left on a twig after a leaf falls
Collenchyma
A type of ground tissue that provides flexible support like the fibers in celery.
What is a leaf?
Typically a leaf is a thin, flattened organ borne above ground and specialized for photosynthesis, but many types of leaves are adapted in ways almost unrecognisable in those terms: some are not flat (for example many succulent leaves and conifers), some are not above ground (such as bulb scales), and some are without major photosynthetic function (consider for example cataphylls, spines, and cotyledons).
Cork Cambium
Lateral meristem that produces cork
Only found in woody plants
Cuticle
Waxy layer covering the epidermis of plants that protects the plant against water loss and disease causing organisms
Not present on the roots.
Eudicot
(5 characteristics)
Member of flowering plants called Eudicotyledones, It has…
two cotyledonsin the seed
Petal arrangements of 4 or 5
Netted leaf veins
Circular vascular bundles
Star-shaped vascular cylinders
Fibrouse root systems
Mass of similarly sized roots that cling to the soil