First slide
Classification of Animals
Question

Which of the following is the triploblastic, bilaterally symmetrical, coelomate with tracheal system for the respiration?

Moderate
Solution

Organisms with triploblastic condition, bilaterally symmetry, eucoelom and tracheal system for respiration are insects (Arthropods). Example: Laccifer 

Meandrina belongs to phylum Cnidaria.

Pleurobrachia belongs to phylum Ctenophora.

Hirudinaria belongs to phylum Annelida.

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