Q108
neet_2024_05_may_morning
Photosynthetic Adaptations
Find the incorrect statement(s) about photosynthesis from the following:
A. The water splitting complex is associated with PS I.
B. C₄ plants use the C₃ pathway of CO₂ fixation as the main biosynthetic pathway.
C. In C₄ plants, photorespiration does not occur.
D. C₃ plants exhibit 'Kranz' anatomy.
E. ATP synthesis in chloroplast occurs through chemiosmosis.
Choose the answer from the options given below:
Solution
Related Formula
Water splitting complex = Associated with PS-II (lumen side). Kranz Anatomy = Exclusive feature of C₄ plants.
Core Logic
- Statement A is incorrect: Water splitting complex is located on the inner side of PS-II membrane, not PS-I.
- Statement B is correct: Both C₃ and C₄ plants utilize Calvin cycle (C₃ pathway) for sugar synthesis.
- Statement C is correct: C₄ plants avoid photorespiration by maintaining high CO₂ at RuBisCO site.
- Statement D is incorrect: Kranz anatomy is shown by C₄ plants, not C₃ plants.
- Statement E is correct: Photophosphorylation in chloroplasts occurs via chemiosmotic hypothesis.
Step 1: Selection
Incorrect statements are A and D. Option (2) is correct.
Pattern Recognition
Water splitting = PS II (A is False). Kranz anatomy = C₄ plants (D is False). Incorrect statements = A and D.
Chapter Mix
Class 11 Biology: Photosynthesis in Higher Plants
