Organisms in which a circulating body fluid is distinct from the fluid that directly surrounds the bodyʹs cells are likely to have which of the following?
a) an open circulatory system
b) a closed circulatory system
c) a gastrovascular cavity
d) branched tracheae
e) hemolymph

B) a closed circulatory system

Explanation:

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the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.