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Phylum Arthropoda
All about arthropods which are also ecdydosan animals
| Question | Answer |
|---|---|
| What type of body symmetry does Phylum Arthropoda have? | Bilaterally symmetric |
| How does the mesoderm line the body wall of arthropods | eucleomate |
| How do they develop ? | They develop as protostomes which means they develop their mouth before their anus. |
| Are arthropods segmented? | Yes, arthropods have metameres , which show limited tagmosis ( metameric specialization) |
| What is the organization of their skeleton/ body parts ? | They have an exoskeleton( made of chitin) |
| How are do arthropods see? | They have compound eyes. Their eyes form composite images that are made of sections. |
| What is the taxonomy of athropods based on | Classically it is based on morphology. |
| What are the three subphyla of arthropoda? | Cholicerita- Horse shoe crab. Crustica- Crusticans Uniramia- insects |
| What are the proposed molecular subphyla? | Crustica- chlicerita Merapodia- many legs Insecta |