Question

Which of the following statements is correct for both blue-green algae and bacteria?

• A. Both are devoid of true nuclei.
• B. Both have chlorophyll pigment.
• C. None of the above
• D. Both show anaerobic respiration.

Answer 1

The correct option is A Both are devoid of true nuclei.

Cyanobacterial cells (blue-green algal cells) are larger and more elaborate than bacteria. In both the organisms the cell structure is typically prokaryotic type one envelope organisation with peptidoglycan wall, naked DNA. Blue-green algae have chlorophyll, bacteria are devoid of chlorophyll. Cyanobacteria generally show aerobic respiration as they are photosynthetic, but bacteria exhibit both aerobic and anaerobic respiration.