Concept explainers
Introduction:
Hemolymph is the circulatory fluid of various invertebrates and vertebrates. Hemolymph is composed of fluid plasma in which cells of hemolymph cells are suspended. The hemolymph is composed of inorganic salts, amino acids, and proteins. The hemolymph is the major tissue type of the open circulatory system.
Answer to Problem 1TY
The correct answer is option (b) is a mixture of fluid in blood vessels and the hemocoel.
Explanation of Solution
Explanation/justification for the correct answer:
Option (b) is a mixture of fluid in blood vessels and the hemocoel. The hemolymph has no distinction between blood and interstitial fluid. More than one heart pumps the hemolymph into sinuses surrounding the organs. Sinus allows the exchange between hemolymph and body cells. So, the correct answer is an option (b).
Explanation for incorrect answer:
Option (a) does not contain blood cells. Hemolymph contains the blood cells. The respiratory pigment of the insect can be green, blue, and sometimes colorless. So, this is an incorrect option.
Option (c) circulates through closed circulatory systems only. Hemolymph circulates through the open circulatory system, found in arthropods. So, this is an incorrect answer.
Option (d) functions only in defense of the body and not transport. Hemolymph provides immunity in invertebrates and also helps in the transportation of hemocytes. So, this is an incorrect answer.
Option (e) does not pass through a heart. Hemolymph is a tissue of the circulatory system. One or more than one heart passes pump the hemolymph. So, this is an incorrect answer.
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Chapter 36 Solutions
Principles of Biology
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