Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← Nature & AnimalsIn avian powered flight, which outcome inhibits stall when birds experience sharp gusts?
A)Alula reduces boundary layer separation✓
B)Increased hemoglobin carries additional oxygen
C)Reduced feather barb stiffness increases form
D)Higher bone density resists torsion better
💡 Explanation
Upward gusts increase the effective angle of attack; the alula creates a slot that energizes the boundary layer air using the mechanism of boundary layer control. This prevents stall because it delays separation, therefore maintaining lift in turbulent conditions rather than experiencing abrupt loss.
🏆 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 outcome influences foraging efficiency when honeybees use landmark-based mental maps amidst floral shifts induced by seasonal changes?
- Which consequence results when polarized light declines for nocturnal moths?
- Which consequence results when an insect larva's imaginal discs prematurely activate due to ectopic hormone release?
- Which limitation impacts the rate of photosynthesis when elevated atmospheric oxygen outcompetes carbon dioxide?
- Which outcome is enhanced for predators using pursuit when their body temperature increases above optimal levels?
- Which effect results when a vascular plant's height exceeds limitations imposed by environmental aridity?
