PLANT TISSUES Flashcards
Collection of similar cells performing an organized function for the plant
Plant tissues
Specialized for a unique purpose and can be combined with other tissues to create organ such as leaves flowers stems and roots
Plant tissues
Plant tissues is divided into two namely
Meristematic tissue
Permanent tissue
Plant tissues under meristematic tissue
Apical meristem
Lateral meristem
Intercalary meristem
Plant tissues under permanent tissue
Dermal
Ground
Vascular
It is for the length
Apical meristem
It is for the diameter or width
Lateral meristem
It is for the rapid growth of young stem
Intercalary meristem
It is for protection gas control and water absorption
Dermal
It is different function based on cell type
Ground
Transport water and nutrients
Vascular
Types of dermal tissues
Epidermal
Stomata or guard cells
Trichomes
Type of dermal tissue for the protection and absorption of water and minerals
Epidermal
Type of dermal tissue for gas exchange
Stomata or guard d cells
Type of dermal tissue for reduced transpiration
Trichomes
Types of ground tissues
Parenchyma
Collenchyma
Sclerenchyma
A type of ground tissue that aids in photosynthesis and storage in the roots
Parenchyma
Type of ground tissue for active shoot support
Collenchyma
Type of ground tissue for deceased shoot support
Sclerenchyma
Types of simple permanent tissues
Epidermis
Parenchyma
Collenchyma
Sclerenchyma
Cork
Secretory tissues
This is the outermost layer of cells found in all young plant organs
Epidermis
These are the most abundant of all the cell types found in almost all major parts of higher plants
Parenchyma
Are elongated cells with irregularly thick cell walls that provide support and structure
Collenchyma
Characterized by cells that are thick walled cells
Sclerenchyma
Serves as the outermost covering of old stems and old roots of woody dicot plants
Cork
These shoes that are concerned with a secretion of substances in plants
Secretory tissues
What are the substances in plants that are secreted by the secretory tissues
Gums resins volatile oils nectar latex
Types of vascular tissues
Xylem
Phloem
Transport water and nutrients
Xylem
Transport organic compounds
Phloem
Long continuous tubes formed by the dissolution of the end walls of vertically elongated cells
Vessels
Elongated tapering cells which are dead at maturity usually with pitted walls
Tracheids
Vertically elongated rows of cylindrical cells with perforated walls and cytoplasm
Sieve tubes
Small elongated and nucleated living cells beside the sieve tubes
Companion cells
Elongated pointed cell with very thick cell walls
Xylem fiber
Thick walls and elongated cells
Phloem fibers
Storage cells of vascular tissues
Xylem Parenchyma
Phloem Parenchyma
Complex permanent tissues
Xylem and phloem
Similar in appearance to ordinary sclerenchyma fibers
Xylem fibers
Smaller in size than ordinary parenchyma cells
Xylem Parenchyma
Long tubes made up of individual cells that are open at each and then are joined end to end to form the tubes
Vessels
More or less allocated cells with oblique and tapering end walls they are angular in cross section and are dead at maturity
Tracheids
Tracheids and vessel elements make up the so-called _____ of the asylum
Tracheary Elements
Helical or spiral appearance of the thickening
Spiral
Thickening appear ladder like
Scaliform
With rounded depressions or pore like structures called pits
Pitted type
Thickenings appear web or net like
Reticulate
Cell wall thickenings in ring pike forms
Annular
Small nucleated parenchymatous cells that are usually associated with some sieve tubes
Companion cells
Look like the ordinary sclerenchyma fibers
Phloem fibers
Look like ordinary parenchyma cells
Phloem parenchyma
Elongated cells joint end to end forming tubes. Their end walls are cross walls have a large number of small pores
Sieve tubes
Small pores under sieve tubes
Sieve plates
It is the loss of water from plants in the form of water vapor
Transpiration
Very diverse in appearance and function in stress resistance including excessive light or temperature and insect and pathogen defense
Trichomes
Protection from insects and microbes
Glandular
Type of trichomes that reduce evaporation by protecting the plant from wind and heat
Branched
Type of trichomes that defense against herbivore animals
Stellate
Type of trichomes that inject substances which may cause pain or irritation
Stinging
Type of trichomes for the protection from harsh environment
Scale
