The class of molluscs that contains the most species is the class _______ .
A: Aplacophora (无板类)
B: Cephalopoda
C: Gastropoda
D: Polyplacophora (多板纲)
E: Bivalia
A: Aplacophora (无板类)
B: Cephalopoda
C: Gastropoda
D: Polyplacophora (多板纲)
E: Bivalia
举一反三
- 下列软体动物中没有开放式循环系统的是 ( )。 A: Bivalvia (双壳纲) B: Gastropoda (腹足纲) C: Cephalopoda (头足纲) D: Polyplacophora (多板纲)
- 在Mollusca中，只有（ ）具有闭管式循环系统。 A: Caudofoveata (尾腔纲) B: Gastropoda (腹足纲) C: Chitons (石鳖) D: Bivalvia (双壳纲) E: Cephalopoda (头足纲)
- 章鱼、乌贼属于软体动物的 A: 多板纲 B: 掘足纲 C: 无板纲 D: 头足纲
- Which of the following is the correct sequence (from broad to specific) of the major taxonomic categories? A: domain, kingdom, phylum, class, order, family, genus, species B: domain, species, genus, family, order, class, phylum, kingdom C: phylum, class, kingdom, domain, order, species, family, genus D: kingdom, order, class, phylum, family, genus, species E: genus, species, domain, phylum, class, order, family, kingdom
- Which two demonstrate an “is a” relationship？ （） A: public interface Person{} public class Employee extends Person{} B: public interface Shape{} public class Employee extends Shape{} C: public interface Color{} public class Employee extends Color{} D: public class Species{} public class Animal （private Species species；） E: interface Component{} Class Container implements Component （ Private Component[ ] children； ）