Structural Organisation in Animals

SYNOPSIS

• Classification of Animal Tissues
  
  
• Classification of Epithelial Tissue
  
  
  
  
• Classification of Connective Tissue
  
  
  
  
  
• Structural Organisation of Some Animals
  
  

  Characteristics	Earthworm	Cockroach	Frog
  Morphology	Metameres, prostomium, peristomium, clitellum, nephridiopores	Head, thorax, abdomen, chitinous exoskeleton	Head and trunk, nictitating membrane
  Digestion	Muscular gizzard, calciferous glands, intestinal caeca, typhiole	Foregut, midgut and hindgut	Alimentary canal and digestive glands
  Circulation	Closed type, blood glands, blood cells phagocytic	Open type, haemocoel, haemolymph	Closed type, heart, blood vessels and blood
  Respiration	Moist skin	Spiracles	Skin (Water) Skin and Lungs (Land)
  Excretion	Nephridia	Malpighian tubules	Kidneys, ureters, cloaca, urinary bladder
  Nervous Coordination	Ganglia	Ganglia, compound eyes, mosaic vision	CNS, PNS, ANS
  Reproduction	Hermaphrodite	Dioecious	Dioecious