CBSE Class 9 Answered

Phylum Arthropoda:

i. Their body is divided into head, thorax and abdomen.

ii. Appendages are jointed.

iii. They are triploblastic, bilaterally symmetrical organisms having a reduced body cavity.

iv. Members of Phylum Arthropoda have a complete digestive system and an open circulatory system.

v. In Arthropods, respiration takes place via the body surface, gills, trachea or book lungs.

vi. They have paired excretory glands and some have excretory organs called malpighian tubules.