(BOTANY) PLANT TISSUES

MIDTERMS

• dermal

• ground

• vascular

Organization of tissues

Leaf, stem, root

Organization of Organs in plant body

Flower, fruit, seed

Reproductive organs of a vascular plant

Meristematic or embryonic tissue

Tissues which cells actively divide and responsible of reproduction

Apical meristems

Tissues found ar the tips od shoots and roots

Primary meristems

It develop into protoderm, ground meristem and procambium

Lateral or cambia

Meristem that increase the girth or diameter (side of roots & stems)

Vascular & cork cambium

Types of dicots

Intercalary meristems

Found in the vinicity of nodes, short lived and increase in the length od stems

Permanent tissues

Meristems that have assumes varuoud shapes & sizes related to their function

Permanent tissues

Non dividing cells (w/ few exceptions) tissue

Simple permanent tissues

One kind of cell with uniform structurecand function

Simple permanent tissue

What type of tissue is parenchyma and epidermis

Complex permanent tissue

Several types of cell working together to perform specific function

Complex permanent tissue

What kind of tissue is Xylem and phloem

Ground, vascular and dermal tissue systems

Plant tissue systems

Parenchyma

Many sided, thin walled, alive at maturity; no secondary sry cell wall

Parenchyma

Tissue that its function is Photosynthesis and food or water storage

Parenchyma

Tissue that is found in all parts of higher plants

Parenchyma

Edible part of most fruit and vegetable is this type of tissue

Collenchyma

Alive, no secondary cell but unevenly thickened walls

Collenchyma

Tissue that its functuon is flexible support to leaves and flowers

Collenchyma

Tissue that usually occur just beneath the epidermis layer

Schlerenchyma

Celld with though, thick secondary cell walls with lignin. Dead at maturity

Schlerenchyma

The tissue’s function is supportvand strength

Sclereids and fibers

Two types of sclerenchyma

Sclereids

Sclerenchyma in seed coats, nut shells, stony endocarps

Fibers

Used in manufacturing textiles and similar products

Xylem and phloem

What are the complex premanent tissues

Xylem

Water conducting tissue

Parenchyma cells, fibers, ray cells and tracheary elements

Xylem consists of:

Xylem

Tissue that its function is conducts water and dissolved substances (plumbing systems)

Vessel elements and tracheids

Actual conducting cells

Xylem

Tissues that is found in vascular bundles with phloem

Phloem

Consist of sieve tube elements(conducting cells) and companion cells

Phloem

Tissue that conducts food (sugar) in solution

Phloem

Tissue that is found in bundles with xylem

Epidermis and periderm

Dermal tissue layers

Epidermis

Found in herbaceous plants

Periderm

Replaces the erpidermis in woody plants

Epidermis

Outermost layer of cells

Epidermis

Found in outer layer around plant body

Epidermis

It exchanges material with the environment and protect internal cells

Cuticle, stomata, trichome

Associated structures in epidermis

Cuticle

Waxy layer composed of cutin secreted by epidermis cells

Cuticle

Prevents leaf from drying out (loss of water)

Stomata

Small pores composed of four types of spcialized epidermal cells which are boarded by guard cells

Stomata

It functions for gas exchange

Trichome

Hair-like epidermal outgrowth in some plants

Trichome

It reduces evaporation by slowing the movement of air across the leaf surface

Periderm

Consist primarily of cork cells

Periderm

It is found on the outer bark of the plant

Periderm

It protects the internal tissues of woody plants