Organisms are classified in three domains. The domain Eukarya is divided into four kingdoms. The organisms in the other domains are prokaryotes. Name the two domains containing prokaryotic organisms and describe differences between these two domains. . . . . . .

Biology

IGCSE&ALevel

CAIE

Exam No：9700_s25_qp_44 Year：2025 Question No：4(c)

Answer:

Knowledge points:

18.1.1 discuss the meaning of the term species, limited to the biological species concept, morphological species concept and ecological species concept

18.1.2 describe the classification of organisms into three domains: Archaea, Bacteria and Eukarya

18.1.3 state that Archaea and Bacteria are prokaryotes and that there are differences between them, limited to differences in membrane lipids, ribosomal RNA and composition of cell walls

18.1.4 describe the classification of organisms in the Eukarya domain into the taxonomic hierarchy of kingdom, phylum, class, order, family, genus and species

18.1.5 outline the characteristic features of the kingdoms Protoctista, Fungi, Plantae and Animalia

18.1.6 outline how viruses are classified, limited to the type of nucleic acid (RNA or DNA) and whether this is single stranded or double stranded

Organisms are classified in three domains. The domain Eukarya is divided into four kingdoms. The organisms in the other domains are prokaryotes. Name the two domains containing prokaryotic organisms and describe differences between these two domains. . . . . . .

Answer:

Knowledge points:

Solution:

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