Question

scientists use a hierarchical system to classify organisms. the broadest categories of classification are known as kingdoms. organisms in the kingdom monera, or eubacteria and archaebacteria, include those who
a. reproduce by spores, such as mushrooms
b. lack a true nucleus, such as bacteria
c. have a nucleus and chloroplasts, such as algae
d. can move independently, such as animals

Explanation:

原核生物界（Kingdom Monera）的生物（如细菌）的特点是没有真正的细胞核。选项A中通过孢子繁殖的蘑菇属于真菌界；选项C中有细胞核和叶绿体的藻类一般属于植物界等；选项D中能独立移动的动物属于动物界。

Answer:

B. lack a true nucleus, such as bacteria