Question

Which of the following is/are reason(s) that archaebacteria is not included in the kingdom Monera?

• A. Cell structure in Archaebacteria is different from that in bacteria.
• B. Archaebacteria are eukaryotes and bacteria are prokaryotes.
• C. Archaebacteria have physiological functions different from bacteria.
• D. Archaebacteria are multicelluar and bacteria is unicelluar.

Answer 1

Answer: (A), (C)

The correct options are
A

Cell structure in Archaebacteria is different from that in bacteria.

C

Archaebacteria have physiological functions different from bacteria.

The archaebacteria were placed under the kingdom monera in five kingdom classification. But later it was found that the archaebacteria are different from other bacteria in cell structure and other physiological functions. Since archaebacteria have different cell structure and physiological functions they can survive in harsh conditions while bacteriacannot. Archaebacteria and bacteria are unicellular and prokaryotes.