A) mandibulata
B) chelicerata
C) trilobata
D) none of these.
Correct Answer: A
Solution :
: Spiders belongs to class arachnida (subphylum chelicerata, phylum arthropoda). They are characterized by absence of locomotory appendages on abdomen and presence of four pairs of jointed legs in thorax, e.g. Achaearanea (house spider).
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