Members of the archaea typically thrive in conditions of excessive a. heat. b. acidity. c. alkalinity. d. salinity. e. all of the choices are correct.

All of the choices are correct. (Ans. E)

Explanation:

Archaea: Archaea are single-celled micro-organisms. They have both characteristics prokaryotic cells and they are more closely related to Eukaryotes also.

As archaea are prokaryotic organisms, which are made up of single-celled and lack a true nucleus, and other organelles. They are similar in size and shape like bacterial cells. Other similarities they share with bacteria include single ring DNA, cell wall and presence of flagella. They are sharing characteristics with eukaryotes in terms of membrane and chemical structure.

Archaea are found in extreme environmental conditions such as hot springs (known as extreme thermophiles), salt lakes (known as extreme halophiles), highly acidic environment (known as acidophiles) and alkalinity environment.

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