A.旋毛蟲(chóng)B.肺吸蟲(chóng)C.血吸蟲(chóng)D.肝吸蟲(chóng)E.鉤蟲(chóng)
A.蟲(chóng)體呈“C”字形B.有兩對(duì)鉤齒C.交合刺中一刺末端呈鉤狀,常包套于另一刺的凹槽內(nèi)D.有尾刺E.成蟲(chóng)比美洲鉤蟲(chóng)略大
A.外形呈線形或圓柱狀B.多為雌雄異體C.雄蟲(chóng)尾端多向腹面彎曲或卷曲D.雄蟲(chóng)大于雌蟲(chóng)E.多有完整消化系統(tǒng)