मराठी
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 9

Non Chordates (Invertebrata) - Phylum: Echinodermata

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Topics

  • Key Points: Echinodermata
Maharashtra State Board: Class 10

Key Points: Echinodermata

  • Body Structure: Triploblastic, eucoelomate, radially symmetrical in adults and bilaterally symmetrical in larvae
  • Habitat: Exclusively marine
  • Locomotion: Tube feet are used for movement and capturing prey; some are sedentary
  • Skeleton: Made of calcareous spines and ossicles
  • Reproduction: Mostly unisexual
  • Examples: Starfish, sea urchin, sea cucumber, brittle star

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