Barophilic prokaryotes -

Barophilic prokaryotes -
A Grow slowly in highly alkaline frozen lakes at high altitudes
B Grow and multiply in very deep marine sediments
C Readily grow and divide in sea water enriched in any soluble salt of barium
D Occur in water containing high concentrations of barium hydroxide

Detailed Solution

The prefix 'baro' refers to pressure, not to barium.
Barophilic (piezophilic) prokaryotes are micro-organisms that grow best at high hydrostatic pressure.
Such pressures are found in the deep oceans, so barophiles grow and multiply in very deep marine sediments and deep sea waters, where the pressure may be hundreds of atmospheres.
Their membranes and enzymes are adapted to work under these pressures.
They have nothing to do with barium salts, and organisms of alkaline frozen lakes would be alkaliphiles and psychrophiles.
So barophilic prokaryotes grow and multiply in very deep marine sediments.

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