Baleen whales feed by taking large quantities of food-laden water into their mouths - VCE - SSCE Biology - Question 23 - 2002 - Paper 1
Question 23
Baleen whales feed by taking large quantities of food-laden water into their mouths. They force the water through baleen plates that act as a filter. The food stays ... show full transcript
Worked Solution & Example Answer:Baleen whales feed by taking large quantities of food-laden water into their mouths - VCE - SSCE Biology - Question 23 - 2002 - Paper 1
Step 1
A. blood in the vessels S contains a higher concentration of oxygen than blood in vessel R.
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Answer
This statement is not accurate in this context. Blood in the vessels S, which likely corresponds to the area receiving oxygenated blood, would have a higher concentration of oxygen compared to vessel R that carries deoxygenated blood.
Step 2
B. the core temperature of a baleen whale would vary depending on whether it was feeding or not.
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Answer
The core temperature of a baleen whale is generally stable, but physiological processes can cause slight variations. Feeding does not significantly alter core temperature.
Step 3
C. there would be a lower concentration of glucose in vessel R than in blood vessels S.
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This is likely true as vessel R is associated with deoxygenated blood post-metabolism where glucose has been used for energy. Conversely, vessel S would have a higher concentration of glucose before it is utilized.
Step 4
D. blood in the vessels S is at a lower temperature than blood in vessel R.
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Answer
This statement is reasonable considering that blood in vessel R would be returning from the warmer internal organs while blood in vessel S could be cooler from exposure to colder water during feeding.
