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Question #46180
The Question
The integument of a frog (Rana tigrina) acts as a crucial respiratory organ during hibernation and aestivation. However, this physiological adaptation imposes a strict ecological constraint. Which of the following statements regarding this structural-functional trade-off is INCORRECT?
Options
- A.
The lack of a heavily keratinized stratum corneum facilitates the diffusion of respiratory gases but offers poor resistance to osmotic gradients.
- B.
In a hypotonic freshwater habitat, the highly permeable skin necessitates the production of copious amounts of dilute urine to maintain homeostasis.
- C.
The extensive cutaneous vascularization allows for the active transport of water molecules to counteract rapid dehydration in hypertonic environments.
- D.
The necessity to keep the respiratory surface moist restricts most amphibians from colonizing marine ecosystems due to the risk of fatal exosmosis.
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
Amphibian Integument | Osmoregulation in Aquatic Adaptations | Diuretic Dynamics
Why This Question Is Tricky
Common Mistakes
The 'Conceptual Pivot' tests the fundamental thermodynamic principle of water movement.
Students often confuse 'active osmoregulation' (which involves pumping ions/salts) with the movement of water itself.
Water is never actively transported in biological systems; it strictly follows osmotic gradients passively.
The trap leverages the impressive-sounding phrase 'active transport of water molecules' to catch students who fail to apply core cellular transport rules to macroscopic ecological adaptations.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Animal Kingdom - Class 11 |
| Concept | Amphibian Integument |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |