A) jointed appendages
B) open blood vascular system
C) triploblastic
D) All of the above
Correct Answer: D
Solution :
Arthropoda (arthros-jointed, podos = foot) phylum was created by Von Siebold (1845). This is the largest phylum with near about 9,00,000 species. Arthropoda is a group of triploblastic, haemocoelomic segmented invertebrates having chitinous exoskeleton, jointed appendages and legs. Circulatory system is of open or lacular type and blood is colourless and contains WBCs only.
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