Which outcome occurs when a grey seal undergoes prolonged diving in icy waters, inhibiting efficient oxygen delivery to vital organs?

💡 Explanation

Peripheral tissues suffer compromised circulation; vasodilation near the surface occurs, increasing blood flow, because this conserves core temperatures and the metabolic rate is high during swimming. Therefore, oxygen demand heightens rather than being reduced, leading to inefficiency by peripheral blood supply changes when submerged.

• Which outcome influences pupae formation using prothoracicotropic hormone (PTTH)?
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• Which outcome results when oxygen demand exceeds branchial countercurrent exchange capacity?