Some Appendages of Crustaceans Are Two-Branched,or ______________

Q40: Crabs,lobsters,and true shrimps belong to the malacostracan

Q41: Saprophagous insects feed on<br>A)plant juices.<br>B)dead animals.<br>C)other insects.<br>D)hyperparasites.

Q42: _ is a condition in which parasitic

Q43: Pentastomids<br>A)are parasites.<br>B)have a nonchitinous cuticle.<br>C)have a nervous

Q44: When spiders mate,the male inserts his _

Q46: The ancestral winged insect gave rise to

Q47: The Acari<br>A)have a distinct head,thorax,and abdomen.<br>B)are of

Q48: The respiratory system in insects consists of

Q49: _ form the basis of the excretory

Q50: The first pair of walking legs of