Why in this question option 2 is correct ?
Why not 3?
In NCERT it is given as
"Archaebacteria differ from other bacteria in having a different cellwall structure and this feature is responsible for their survival in extreme conditions".
Q.64. Many blue-green algae occur in thermal springs (hot water springs). The temperature tolerance of those algae have been attributed to their
(1) Mitochondrial structure
(2) Importance of homopolar bonds in their proteins
(3) Cell wall structure
(4) Modern cell organization
 

Dear student

Please refer the solution below for the said query


The blue green algae belongs to the eubacteria group not archaebacteria.

The archaebacteria surive in harsh conditions due to their cell wall structure but blue green algae, an eubacteria survives in thermal springs (hot water springs) due to presence of homopolar bonds in their proteins. Hence, correct option is (2).



Hope this information clears your doubt about the topic.

Regards

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