Which statement about the Malpighian tubules is FALSE?

A) Water and some solutes are transported into the Malpighian tubules via active transport.
B) The Malpighian tubules empty into the gut of the insect.
C) Water, some salts, and other solutes are reabsorbed into the hemolymph in the rectum.
D) The excretory system of an insect may contain up to several hundred Malpighian tubules.
E) The blind ends of the Malpighian tubules are bathed in hemolymph.

Question

Faith Trotto · Accepted Answer

Final Answer : A, Explanation :  Malpighian tubules function primarily through the secretion of solutes into their lumen by active transport, which then drives the osmotic movement of water into the tubules. However, the statement as phrased suggests that water and solutes are actively transported into the tubules, which is misleading because the primary mechanism for water movement is osmotic, following the active transport of solutes.

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