Give examples of structural and physiological traits that areadaptations to flight.

Duck breast muscles are red (“dark meat”), whereas chicken breast muscles are white. Which species probably can fly for a longer time before fatiguing?

In a lab practical, you assessed the jumping performance of a locust by measuring the distance jumped. You also measured the speed of extension movements of the tibia of a locust’s isolated hind leg that were elicited by brief electrical stimuli that you delivered to the extensor tibiae muscle through fine electrodes. Briefly explain how these two experiments together shed light on the mechanisms permitting locusts to jump further than one metre despite their small size.