Prawn , housefly , and spider belong to the one group. (a) Name the group. (b) Justify the name given to this group. Share with your friends Share 3 Parnika Katiyar answered this (a) Arthropoda (b)They have legs which are jointed. 11 View Full Answer Lioncub answered this 1. Arthropoda 2. they are called so because they have jointed legs...(arthropod) 7