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Question #46701
The Question
A frog is exposed to a freshwater habitat heavily contaminated with synthetic surfactants (detergents). Based on the principles of cutaneous respiration and osmoregulation, which of the following best describes the primary physiological impact on the frog's integumentary system?
Options
- A.
Disruption of the cutaneous aqueous film preventing O2 solubilization, accompanied by increased epithelial permeability leading to hypo-osmotic shock.
- B.
Enhanced rate of cutaneous gas exchange due to lowered surface tension, followed by severe cellular dehydration from rapid electrolyte efflux.
- C.
Coagulation of the mucous layer leading to immediate desiccation of the stratum corneum and competitive inhibition of cutaneous capillary beds.
- D.
Hyper-oxygenation of the blood due to increased membrane fluidity, coupled with hyper-osmotic shock from massive water efflux.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
Frog Integumentary Respiration|Diuretic Dynamics|Bioactive Molecule Origin
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often memorize 'moist skin is required for respiration' without understanding the biophysical requirement (gases must dissolve in a stable liquid film before diffusing).
The trap lies in the osmotic gradient: students frequently confuse the direction of water movement.
In freshwater, a frog's internal fluids are hyperosmotic to the environment, so a compromised skin barrier leads to massive water influx (hypo-osmotic shock), not dehydration.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Structural Organisation in Animals - Class 11 |
| Concept | Frog Integumentary Respiration |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |