| ⇦ | 
| ⇨ |
In purple and green bacteria, oxygen is not evolved during photosynthesis because hydrogen donor is
Options
(a) H₂O
(b) NH₃
(c) H₂S
(d) CH₄
Correct Answer:
H₂S
Explanation:
Purple and green bacteria are photoautotrophic bacteria which respectively have bacteriochlorophyll and bacteriophaeophytin as photosynthetic pigments. These bacteria perform anoxygenic photosynthesis i.e. no O₂ is evolved during photosynthesis because of this water is not used as a source of reducing power, instead hydreogen is obtained either directly (some purple bacteria) or from various types of inorganic and organic compounds, e.g., H₂S (green bacteria).
H₂S → 2(H) + S
Related Questions: - The vacuole in the plant cell contains
- Phytochrome in plants is sensitive to
- Spot out the zone of our country considered as the hot spot of biodiversity
- Number of chlorophyll arranged per reaction centre in the light harvesting
- Pattern of cleavage in frog’s egg is
Topics: Photosynthesis in Higher Plants
(153)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The vacuole in the plant cell contains
- Phytochrome in plants is sensitive to
- Spot out the zone of our country considered as the hot spot of biodiversity
- Number of chlorophyll arranged per reaction centre in the light harvesting
- Pattern of cleavage in frog’s egg is
Topics: Photosynthesis in Higher Plants (153)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply