Question

Many blue-green algae occur in thermal springs (hot water springs). The temperature tolerance of these algae have been attributed to their

• A. cell wall structure
• B. mitochondrial structure
• C. modern cell organization
• D. importance of homopolar bonds in their proteins

Answer 1

The Correct Option is D

Blue-green algae which grow in hot water springs (at about 70$^{\circ}$C) are Oscillatoria terebriformis, Oscillatoria brevis etc. These blue-green algae are also called thermophytes. The temperature tolerance of these algae is due to the presence of homopolar bonds in their proteins.