You encounter an organism with the following characteristics: marine, endothermic, and uses lungs. Which of the...
You encounter an organism with the following characteristics: marine, endothermic, and uses lungs. Which of the following is most likely to also be TRUE about this organism?
a. it has a closed circulatory system
b. It has hemolymph
c. it has a high surface area to volume ratio
d. all of these options are likely to be true
e. it has gills
Homework Answers
Ans) a. It has a closed circulatory system.
Since the organism is marine, endothermic (organisms that are able to maintain a constant body temperature, regardless of their ambient temperature ) and uses lungs , this must be a mammal ( eg: whale).
So it has a closed circulatory system. Hemolymph(fluid equivalent to blood in most invertibrates, occupying the haemocoel) and gills are absent. And do not have high surface area to volume ratio.
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