Plant and animal tissues

|     Nature of plant materials could be hard, soft or   spongy.

|     Nature of plant materials have adapted according to their function.

|     Group of cells has formed tissues in order to perform a particular function.

|     Animal bodies are also formed with different types of tissues.

|     Nature and functions of animal tissues are diverse

Parenchyma, collenchyma, sclerenchyma, xylem and phloem are plant tissues.

Tissues of Parenchyma, collenchyma and sclerenchyma contain only one type of cell.

	Parenchyma	collenchyma	sclerenchyma
Properties	Living cells Isodiametric cells Inter cellular space present	Polygonal in shape Inter cellular space present Extra cellulose in corners Shiny cell wall	Hard dead cells Lignified walls Lack intercellular space
Distribution	Yams, fruits, Leaves, seeds Other edible Parts of plants	Dicot plants, In veins of leaves and layers immediately interior to epidermis in young stems	Seed coat of dates, shell of coconut
Function	Storage of food and water, Mechanical support to herbaceous plants through the turgidity of cells.	Mechanical support to dicot plant parts	Protection and support to plant parts

Parenchyma- different types:-

Pallisade parenchyma

Spongy parenchyma

Aerenchyma

xylem	phloem
Tubular structure	Tubular structure
Vessels,tracheids,fibers,parenchyma	Sieve tube elements , Companion cells, fibers, parenchyma
Transport of water & minerals Provide mechanical support	Transport of food & storage

Major animal tissues:-

Blood tissue

Muscle tissue

Epithelial tissue

Blood tissue-cells and plasma present

                     Transports and fight diseases

                     

Epithelial tissue:-

Covers body surfaces and organs

Muscle tissue

Smooth muscles	Skeletal muscles	Heart muscles
Spindle shaped, Unstriated, uninucleate cells	Muscle fibres,unbranched, Non spindle shaped fibers, striated	Non spindle shaped fibers, striated, branched
Lining of alimentary canal, urinary bladder, Arteries, veins	Attached to skeleton	In heart
Slow movement Non voluntary movement,	Quick movement, Easily tired	Rhythmic beat, functions till death

Mutated cells cause cancer