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Question #46646
The Question
Read the following statements regarding ecological succession and select the INCORRECT statement:
Options
- A.
Both hydrarch and xerarch successions progress towards medium water conditions, ultimately converging into a similar mesic climax community.
- B.
In primary succession on bare rock, lichens act as pioneer species by secreting acids to facilitate pedogenesis, which is subsequently followed by bryophyte establishment.
- C.
The stabilization of a mesic climax community is independent of its boundary ecotone, as the climax stage is a closed system immune to external edge effects.
- D.
During the progression of a sere, there is a gradual increase in species diversity, an increase in total biomass, and a shift towards a more complex food web.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Optimal Foraging Theory|Alien Species Invasion Impacts|Co-extinction Logic
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often memorize the NCERT phrase 'the climax community is in near equilibrium with the environment' and falsely equate 'equilibrium' with 'absolute invulnerability' or a 'closed system'.
This trap exploits the failure to recognize that ecosystems are open systems; the boundary conditions (ecotones) are biologically critical for buffering the climax community against edge effects and maintaining the mesic microclimate.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Organisms and Populations - Class 12 |
| Concept | Optimal Foraging Theory |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |