EOSC Unit 4 Exam Questions and Answers All Correct
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Course
EOSC
Institution
EOSC
EOSC Unit 4 Exam Questions and Answers All Correct
Why do Birds Migrate? - Answer- To exploit habitats inaccessible to others
How Have Penguins Adapted to Their Environment? - Answer- -Wings are flippers
-Streamlined body and beak
-Dense bones
-Counter shading
-Eyes adapted for underwater ...
EOSC Unit 4 Exam Questions and
Answers All Correct
Why do Birds Migrate? - Answer- To exploit habitats inaccessible to others
How Have Penguins Adapted to Their Environment? - Answer- -Wings are flippers
-Streamlined body and beak
-Dense bones
-Counter shading
-Eyes adapted for underwater vision
-Fat & air trapped under feathers
-Eat krill, fish, squid
-Travel inland to mate in Antarctic water
-Eggs don't hatch until summer
-Males incubate with feet
Characteristics of Mammals - Answer- -Endotherms: live in many environments, makes
them efficient
-Hair
-Viviparous (exceptions)
-Mammary glands: milk producing
-Three ear bones
How do Marine Mammals Stay Warm? - Answer- -Extremely dense hair that traps air
-Blubber
Prototherians (Monotremes) - Answer- -Platypus, Echidna
-Oviparous
-Temperature varies more than most
-Pelvic girdle: reptilian posture
-Lactation onto hair for young
Metatherian (Marsupials) - Answer- -Tiny, poorly developed embryo
-Females have pouch protection with multiple nipples
-Can have 3 offspring simultaneously(embryo, pouch, out of pouch)
-Through convergent evolution, some of them resemble different mammals that occupy
similar roles
Eutherian (Placental Mammals) - Answer- -Embryos nourished in utero by placenta
-Gestation: nourishing young in embryo
-Shortest gestation: bandicoot, 12 days
, -Longest gestation: Elephant, 22 months
What is Embryonic Diapause? Why is it advantageous? - Answer- -When the female
delays birth until the conditions are optimal
-Allows for more advantageous birth time and conditions
Locomotion - Answer- Climb, swim, walk, fly, hop
Apneustic Breathing - Answer- -For marine divers to dive
-High levels of Myoglobin & Hemoglobin
-Exhale before diving for negative buoyancy
-Restrict circulation to just vital organs to preserve O2
-Heart BPM goes down to single digits
Mammal Adaptations for Marine Environment - Answer- -Fusiform body
-Fins/flippers
-Warmth:blubber, hair
-Diving: lungs, muscles, heart rate, circulatory system
Why do Birds Migrate? - Answer- To exploit habitats inaccessible to others
How Have Penguins Adapted to Their Environment? - Answer- -Wings are flippers
-Streamlined body and beak
-Dense bones
-Counter shading
-Eyes adapted for underwater vision
-Fat & air trapped under feathers
-Eat krill, fish, squid
-Travel inland to mate in Antarctic water
-Eggs don't hatch until summer
-Males incubate with feet
Characteristics of Mammals - Answer- -Endotherms: live in many environments, makes
them efficient
-Hair
-Viviparous (exceptions)
-Mammary glands: milk producing
-Three ear bones
How do Marine Mammals Stay Warm? - Answer- -Extremely dense hair that traps air
-Blubber
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