Please enable JavaScript.
Coggle requires JavaScript to display documents.
Plant tissue (dermal tissue (within the dermal tissue is the root hair…
Plant tissue
dermal tissue
within the dermal tissue is the root hair which: increase water uptake by increasing the surface area of the cell , do not carry out photosynthesis they do not contain chloroplasts.
function : first line of defense. It protects against damage to the plant itself. In addition,to protect the plant from injury and water loss
within the dermal layer are specialized cells ( stomata and guard cells ) that are responsible for allowing gas exchange to occur
the dermal tissue knows as the epidermis : a one cell layer thick, and its cells lack chloroplasts.
the dermal tissue "the epidermis" : single layer of cells covering the younger parts of a plant , include leaves, roots, stems, flowers, fruits, and seeds.
trichomes : are small hairs on the plant surface.They are epidermal extensions that can alter the boundary layer over a leaf surface , function in light piping (concentrating light on the underlying tissues). They aid in reducing water loss through transpiration. They can also alter heat loss from a plant, and act in storage and secretion of secondary metabolites.
-
Meristematic tissue
Lateral meristems
Functions
Produce secondary tissues from a ring of vascular cambium in stems and roots and increases in root and stem diameters.
-
-
-
-
Cork cambium
Functions
to produce the cork, a tough protective material.
Characteristics
is a lateral meristem and is responsible for secondary growth that replaces the epidermis in roots and stems
-
-
-
ground tissue
Characteristics: parenchyma, collenchyma, and sclerenchyma cells. Have thin cell walls, many chloroplast and large central vacuoles.
Function: photosynthesis, storage of nutrient and support.
Plant tissue that are not meristematic tissues, dermal tissues or vascular tissues is ground tissue
-
found in roots, stems and leaves
vascular tissue
vascular tissue transports water ,food and dissolved substances which is the main function of two types of vascular tissue xylem and phloem
phloem. a vascular tissue in land plants primarily responsible for the distribution of sugars and nutrients manufactured in the shoot
Sieve tubes consist of sieve elements which are elongated cells, connected to each other via sieve plates to form a continous tube system that spreads out through the entire plant
companion cell is a specialized parenchyma cell, located in the phloem of flowering plants and closely associated with the development and function of a sieve-tube element.
xylem a compound tissue in vascular plants that helps provide support and that conducts water and nutrients upward from the roots, consisting of tracheids, vessels, parenchyma cells, and woody fibers.
-
tracheid. elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts.
-
Lamya AlJehani, Hatoon AlMashal ,Dana AlSalem, Lama AlQasim, and Yara AlKahtani :star: 11 D
