Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← Nature & AnimalsWhich process dominates when freshwater fish move upstream?
A)Osmotic water gain to maintain hydration✓
B)Minimizing oxygen consumption during exertion
C)Increased scale production for protection
D)Enhanced sodium ion retrieval from urine
💡 Explanation
Osmotic water gain will dominate because freshwater fish live in a hypotonic environment, exhibiting passive water influx into the body via osmosis rather than constantly drinking like marine fish. Therefore, they combat overhydration rather than dehydration.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Nature & Animals →- Which consequence occurs when an avian species' geographical map is disrupted?
- Which outcome occurs when humidity drops during C4 photosynthesis?
- Which metabolic rate in terrestrial plants diminishes when soil salinity overwhelms root absorption?
- Which effect occurs during pursuit hunting when an apex predator exerts repeated bursts of acceleration?
- Which outcome occurs when beluga whales enter warmer waters after prolonged Arctic foraging?
- Which outcome occurs when a migratory bird's specialized photoreceptors are disrupted by an artificial light source on a cloudy night?