Ecosystem Question 79
79. Barophilic prokaryotes:
[2005]
(a) grow and multiply in very deep marine sediments
(b) occur in water containing high concentrations of barium hydroxide
(c) readily grow and divide in sea water enriched in any soluble salt of barium
(d) grow slowly in highly alkaline frozen lakes at high altitudes
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Answer : a
Hints & Solutions
(a) Barophiles are bacteria which live in high pressure environments. They are generally found on ocean floors, where pressure generally exceeds $380 atm(38 MPa$ ). Some have been found at the bottom of the Pacific Ocean where the maximum pressure is roughly $117 MPa$.
