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单选题 In annelids, the ( ) is a site of amino acid metabolism
学科：普通动物学（上）
时间：2023-06-23 05:37:21
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题目1单选题
( ) are the excretory organs of most polychaetesA. ChloragoguesB. MetanephridiaC. OsphradiaD. Nuchal glandsE. Ommatidia
题目2单选题
In annelids, the ( ) is a site of amino acid metabolismA. liverB. typholosoleC. chloragogen tissueD. clitellumE. kidney
题目3单选题
Leeches(蛭) typically lack ( )A. segmentsB. a digestive tractC. sense organsD. a pharynx(咽)E. setae(刚毛)
题目4单选题
The ( ) is a thin-walled storage area in the oligochaete digestive tractA. pharynxB. stomachC. cropD. esophagusE. gizzard
题目5单选题
Every polychaete body compartment has a ( ) ganglion which aids in coordination of swimming and crawlingA. suprapharyngealB. subpharyngealC. segmentalD. cerebralE. cephalic
题目6单选题
Polychaetes are distinguished by lateral extensions of the body called( )A. parapodiaB. setaeC. prostomiD. palpsE. tentacles
题目7单选题
Polychaetes have a ( ) circulatory systemA. bloodlessB. closedC. lacunarD. openE. countercurrent
题目8单选题
The anticoagulant secreted by leech salivary glands is ( )A. hirudinB. salivaC. salivary amylaseD. hemerythrinE. prothrombin
题目9单选题
In the class Clitellata, the larval form is ( )A. a trochophoreB. absentC. a veligerD. dormantE. free-living
题目10单选题
Clitellate reproduction may be characterized by ( )A. the female picking up the spermatophore with the cloacaB. reciprocal sperm transferC. hypodermic impregnationD. amplexusE. shedding of gametes into the environment
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