Class 9
Chapter 7 Class 9 - Diversity In Living Organisms
  • The body is bilaterally symmetrical, triploblastic and flattened.
  • Body is thin, soft , leaf-like or ribbon-like.
  • Circulatory and respiratory systems and skelton are absent.
  • They are mostly parasites only a few are free living.
  • They have an organ level of organization.
  • The body has a soft covering with or without cilia.
  • Hermaphrodite ,i.e. Both male and female reproductive organs occur in the same individual.
  • There is no true internal body cavity or coelom, in which well developed organs can be accommodated.

For example : Free-living animals like planarians, or parasitic animals like liverflukes.

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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo