Arthropoda

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Across
  1. 2. meaning of poda
  2. 4. presence of mesoderm in germinal layer
  3. 8. organ that performs excretion
  4. 10. producing young by means of eggs
  5. 11. inner layer of the germinal organisation
  6. 12. flap-like appendages that perform gas exchange
Down
  1. 1. region containing all vital organs aka mesosoma
  2. 3. an organ that maintains equilibrium
  3. 5. organism that has not undergone visible morphological changes
  4. 6. exoskeleton consists of a tough semitransparent substance
  5. 7. largest phylum in animalia
  6. 8. repetition of internal and external division
  7. 9. meaning of arthro
  8. 13. level of organisation