Kingdom Monera
Mediumbiology
Which characteristic is typical of cyanobacteria but absent in most true bacteria?
Select the correct option:
Solution
Incorrect! Answer:
Photosynthetic pigments with oxygenic photosynthesis
- Prokaryotes: Both True Bacteria (Eubacteria) and Cyanobacteria (Blue-green algae) belong to Kingdom Monera and share prokaryotic traits (no nucleus, 70S ribosomes, peptidoglycan walls).
- Photosynthesis types:
- Most True Bacteria: If they photosynthesize, they are usually anoxygenic (do not produce oxygen, e.g., purple sulfur bacteria).
- Cyanobacteria: They have Chlorophyll a (similar to green plants) and perform oxygenic photosynthesis (splitting water to release O2).
- Unique Pigments: They also contain phycobiliproteins (phycoerythrin and phycocyanin).
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About This Question
- Subject
- biology
- Chapter
- diversity in living world
- Topic
- kingdom monera
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Photosynthetic pigments with oxygenic photosynthesis
- Prokaryotes: Both True Bacteria (Eubacteria) and Cyanobacteria (Blue-green algae) belong to Kingdom Monera and share prokaryotic traits (no nucleus, 70S ribosomes, peptidoglycan walls).
- Photosynthesis types:
- Most True Bacteria: If they photosynthesize, they are usually anoxygenic (do not produce oxygen, e.g., purple sulfur bacteria).
- Cyanobacteria: They have Chlorophyll a (similar to green plants) and perform oxygenic photosynthesis (splitting water to release O2).
- Unique Pigments: They also contain phycobiliproteins (phycoerythrin and phycocyanin).
This medium difficulty biology question is from the chapter diversity in living world, covering the topic of kingdom monera. It appeared in the 2025 exam.
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