phylum vertebrata class 9

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SHANTI DHAM SR.SEC.SCHOOL

• GROUP ACTIVITY
• TOPIC PRESENTATION
• FORMATIVE ASSESSMENT- 3
• TOPIC PHYLUM VERTEBRATA
• MADE BY GROUP IInd

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VERTEBRATA

• Vertebrates animals are bilaterally symmetrical,
  triploblastic, ceolomate and segmented with full
  differentiation.
• Well developed nervous system, circulatory
  system, execratory organs and brain.
• They have notochord, dorsal nerve cord and lungs
  or gills for respiration.

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PISCES

• These are fishes.
• These are mostly aquatic animals. Their skin is
  covered with skin or plates.
• They respire by using their gills pouches.
• On the basis of their endoskeleton the phylum
  Pisces divided into two class -
• Bony fishes
• Cartilaginous fishes.

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BONY FISHES

• In bony fishes the endoskeleton is made up of
  skeleton.
• Body is spindle-shaped. They have 3-4 pairs of
  gills.
• They do not have swim bladder and they can stay
  in water without swimming.
• They have two chambered heart. They are
  cold-blooded fishes.
• Examples are- Rohu, Climbing perch, lung fish,
  cat fish, etc.

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CARTILAGINOUS FISHES

• These fishes have endoskeleton made up off soft
  bones or cartilage which are very flexible.
• They have 5-7 pairs of gills pouches.
• These fishes are mostly found in marine water and
  found largely in every areas.
• They have swim bladder and they cant stay at rest
  without swimming.
• Some examples are- scoliodon(dog fish), electric
  ray, sting ray, etc.

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AMPHIBIA

• These animals are two lives i.e. they live on
  water as well as in land.
• They live in land but lay egg in water. Skin is
  smooth or rough.
• Have three chambered hearts. Double circulation
  of blood through hearts. Cold blooded animals.
• Respiration is either by lungs, gills, or skin.
• Examples are- common frog, toad, tree frog,
  salamander, etc.

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REPTILLA

• These are cold-blooded, terrestrial or aquatic
  vertebrates with a dry water-proof body.
• Teeth are present. They have three chambered
  heart.
• Respiration takes place through lungs and gills
  are absent.
• Examples are- tortoise, turtle, crocodile,
  chameleon, gharial, cobra, etc.

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AVES

• These are flying animals or birds. Warm-blooded
  animals.
• Body is covered with feathers in streamlined
  shaped.
• Respiration by lungs, four-chambered heart and
  all the system are well developed. These lay eggs
  on trees.
• Examples are- crow, sparrow, ostrich, duck,
  peacock, eagle, etc.

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MAMMALIA

• Warm-blooded, four chambered heart, RBC present.
• Fully differentiation occurs.
• Respiration through lungs, all the systems are
  well developed. Have mammary glands, sweat
  glands, etc.
• Kidneys are in bean-shaped and sexual
  reproduction takes place.
• Examples are- human beings, rat, cat, bat, whale,
  elephant, etc.

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