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Question #46971
The Question
Evolutionary strategies for survival and reproduction vary significantly across taxa, shifting from communal dispersal mechanisms to complex ontogenic development. When comparing the stress responses and reproductive shifts from Protists to Spermatophytes, which of the following statements is INCORRECT?
Options
- A.
Under unfavourable conditions, the plasmodium of slime molds differentiates to form fruiting bodies bearing spores, acting as a communal strategy for dispersal.
- B.
The retention of the female gametophyte on the parent sporophyte in heterosporous pteridophytes is an ontogenic shift that serves as a precursor to the seed habit.
- C.
Polyembryony in Citrus is achieved through the extracellular aggregation and fusion of independent nucellar cells, mimicking the communal survival strategy of slime molds.
- D.
While slime molds utilize fruiting bodies for widespread spore dispersal, the seed habit in spermatophytes prioritizes the intracellular protection and nourishment of the developing embryo.
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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
Slime Mold Aggregation|Lac Operon Inducibility|Glucose Repression
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Conflating the communal, extracellular aggregation seen in lower organisms (slime molds forming fruiting bodies) with the complex, intracellular ontogenic development of higher plants (nucellar polyembryony).
Students often memorize 'multiple entities forming a structure' and might equate the clustering of nucellar embryos with the aggregation of slime mold cells, failing to recognize that nucellar polyembryony is an in situ sporophytic budding process, not cellular fusion or aggregation.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Biological Classification - Class 11 |
| Concept | Slime Mold Aggregation |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |