Compared to each other fibers are _____ and sclereids are ______. (Word bank: long, short)
Compared to each other fibers are LONG and sclereids are SHORT.
The outermost layer of cells of the leaf and of the young stems and roots; primary in origin.
Define: guard cells
Pairs of specialized epidermal cells that surround pores, or stoma.
Changes in tugor of the guard cell cause the opening and closing of the pore.
an outgrowth of the epidermis, such as a hair, scale, or water vesicle.
A small opening, bordered by guard cells, in the epidermis of leaves and stems through which gasses pass.
The outer protective tissue that replaces the epidermis when it is destroyed during secondary growth.
Define: cork (phellem)
A secondary tissue produced by cork cambium. They are non-living at maturity and contain suberin in their cell walls - which makes them resistant to the passage or gasses and water vapor.The outer part of the periderm.
Define: cork cambium (phelogen)
The lateral meristem that forms the periderm, producing cork towards the surface of the plant, and phelloderm towards the inside.
In inner part of the periderm formed by the cork cambium.
Waxy or fatty layer on outer wall of epidermal cells, formed of cutin and wax.
What three things make up the periderm?
Includes the cork, cork cambium, and phelloderm.
What plants have dermal tissue?
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