bio

• Tissue is a group of cells that are similar in structure and work together to achieve a particular function
• Cell


  The basic unit of life
• Tissue


  A group of cells
• Organ


  A group of tissues come together to form an organ
• Organ system


  Different organ systems coordinate to perform various life processes and forms an organism
• Plants are stationary hence no muscular tissue are present
• Tissue organization is different as animals are mobile and need muscular tissue
• Growth tissues are not uniformly located, and some cells divide continuously in plants
• Growth tissues are uniform and allow limited growth only in animals
• Classification of Plant Tissue

  • Meristematic Tissue
  • Permanent Tissue
• Meristematic Tissue


  • Actively dividing cells
  • Have dense cytoplasm and thin cellulose walls
  • Have prominent nucleus and lack vacuole
  • Few cells take up a specific role and lose the ability to divide to form permanent tissue
• Differentiation


  The process of taking up a permanent shape, size, and function
• Types of Meristematic Tissues

  • Lateral
  • Apical
  • Intercalary
• Permanent tissues are formed from meristematic tissue cells that have lost their ability to divide
• Types of Simple Permanent Tissue

  • Protective Tissue
  • Supportive Tissue
• Protective Tissue


  • Consists of cells with thick walls
  • Epidermis is the protective tissue that undergoes changes in older plants to form cork
• Types of Protective Tissue

  • Epidermis
  • Cork
• Types of Supportive Tissue

  • Parenchyma
  • Collenchyma
  • Sclerenchyma
• Specialized Parenchyma Cells


  • Storage parenchyma
  • Aerenchyma
  • Chlorenchyma
• Complex Permanent Tissue


  Also called conducting or vascular tissue, made up of more than one type of cells
• Types of Conducting Tissue

  • Xylem
  • Phloem
• Components of Xylem


  • Tracheid
  • Xylem Vessel
  • Xylem Parenchyma
  • Xylem Fibre
• Components of Phloem


  • Sieve tube
  • Companion cell
  • Phloem fibre
  • Phloem parenchyma
• Classification of Animal Tissue

  • Epithelial Tissue
  • Connective Tissue
  • Muscular Tissue
  • Nervous Tissue
• Types of Epithelial Tissue

  • Simple Squamous
  • Stratified Squamous
  • Columnar
  • Ciliated Columnar
  • Cuboidal
  • Glandular
• Types of Connective Tissue

  • Blood
  • Bone
  • Ligament
  • Tendon
  • Cartilage
  • Areolar
  • Adipose
• Types of Muscle Tissue

  • Skeletal Muscle
  • Smooth Muscle
  • Cardiac Muscle
• Neuron


  Cells of the nervous tissue that are highly specialised for being stimulated and then transmitting the stimulus within the body
• Components of Neuron


  • Dendrite
  • Cell Body
  • Axon
  • Axon Terminal
• Nerve Fibre


  Connective tissues bind neurons which form nerve fibres, and nerve fibres bundle up to form a nerve