Many bluegreen algae occur in thermal springs (hot water springs). The temperature tolerance of these algae have been attributed to their (a) mitochondrial structure (b) importance of homopolar bonds in their proteins (c) cell wall structure (d) modern cell organization.
Option C Some algae withstand or tolerate a very high temperature and these are often called thermal algae. Such forms are known to grow upto 85ºC, nearly boiling water.
