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Hello,I am Francis. I will introduce the morphology of Molluscs Echinoderms and Chordates to you !!. Biology . Vertabrate. Invertabrate. Vertabrate. Mammal. Bird. Fish. Amphibian. Reptile. Invertabrate. Echinodermata. Molluscs. Starfish. Tapering arm. Mouth.
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Hello,I am Francis. I will introduce the morphology of Molluscs Echinoderms and Chordates to you !! Biology
Vertabrate Invertabrate
Vertabrate Mammal Bird Fish Amphibian Reptile
Invertabrate Echinodermata Molluscs
Starfish Tapering arm Mouth
Charcteristics • Has many short,hard and blunt spines • Has eyespot for sensation of light
Characteristics of Bivalves • Bilateral symmetrical • Have gill • With hard shell • With foot
gills on this great white shark can be seen as vertical slits on the shark's side.
Gill of fish Fishes undergo gaseous exchange by respiration with gills
Swimming bladderFunction?? - assist to supply extra oxygen to fish living stagnant water
Lateral line Function: Serves as a “distance touch”in water for detecting and locating objects and moving animals
Photo of amphibian GiantMonkeyTreeFrog Salamander
Web hand digit Function??? • Provide large surface Then? • Help to push against water when swimming
Characteristics of Frog • Streamlined body • Skin with mucus • Withwebs • Lung,skin and buccal surface for respiration
Skeleton of amphibians • both bony and cartilaginous components in different ratio (depends on strength required for locomotion)
Salamander • have a largely cartilaginous skeleton Frog • more rigid and bony to withstand the impact of jumping and landing
Nearly all reptiles have three- chambered hearts • Crocodilians have four-chambered hearts.
Characteristics of reptile • most lack external ears • breathe with lungs • Dry and tough skin • have backbones or spinal columns. Except for snakes • covered with scales
Skeletal FeaturesAll reptiles have backbones or spinal columns. Except for snakes, reptiles have paired limbs that typically end in five-clawed fingers or toes. Most reptiles have a pelvis that is associated with at least two spinal bones.
Sense • sight is important for hunting • Some organisms like bat,eyes have been lost or have become greatly reduced • Amphibians are very susceptible to temperature and pressure change
Characteristics of bird • with feathers and wings • have four-chambered hearts • warm-blooded • feathers are waterproof