BIOL 1902 Final Exam With Complete Solutions
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Mobility -ANS>The ability to move freely through high snow
Moose (Physical Adaption) -ANS>Legs up to 2 meters high to walk through snow
Snowshoe Hares (Physical Adaption) -ANS>Large hind feet that allow the animal to
walk above the snow
Fisher (Physical Adaption) -ANS>Northern Weasel with large hind feet
Northern Grouse (Physical Adaption) -ANS>Has feathers on its feet increasing
surface area and acting as snowshoes
Ruffed Grouse (Physical Adaption) -ANS>Grows snowshoes every autumn
Subnivean Space -ANS>The area below the snow where animals can travel
White-Tailed Deer (Behavioural Adaption) -ANS>Move to a sheltered area called a
yard with less snow
,Yard -ANS>Low lying area with minimal snow where white-tailed deer gather
during winter
Browse Line -ANS>The highest point in a tree where a Deer can reach and feed
Otter and Mink (Behavioural Adaption) -ANS>Have very short legs so they
toboggan on their stomachs to travel across snow
Monarch Butterflies (Migration) -ANS>Migrate to Mexico before winter and don't
return
Green Darner (Migration) -ANS>A dragonfly that migrates to the Cape Cod area
over winter
Arctic Tern (Migration) -ANS>Champion migratory bird, travelling over 20,000 km
round trip in a year
Semipalmanated Sandpipers -ANS>Double their body weights in just 10 days of
feeding before migration
Songbirds (Migration) -ANS>Birds that migrate primarily at night
Advantages of Travelling at Night -ANS>No overheating because of cooler temps,
typically less wind at night, safer from predator species because of low light
, Eagles and Hawks (Migration) -ANS>Use a "Thermal Hop" when migrating. Soar up
using updrafts and glide back down
Bounding Flight -ANS>Using thermal hopping or going up and down during
migration
Hummingbirds and Blackbirds -ANS>Example of birds who travel during the
daytime
How Birds Navigate during Migration -ANS>Visual Cues (ocean, sun, mountains);
Nocturnal Cues (constellations, moon, sky)
Earth Magnetic Field -ANS>Unknown mechanism that birds possess allowing them
to navigate thousands of miles without getting lost
Rhodopsin -ANS>A photopigment in the retina likely involved in electromagnetic
interaction
Sandpipers (Migration) -ANS>Example of a bird who migrates both day and night
Red Knot (Migration) -ANS>Geotracker found they flew 5,100 km in 8 straight days
of flying
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