Question

Malpighian tubules remove excretory matter from the:

• A. Hemolymph
• B. Alimentary Canal
• C. Both A and B
• D. None of the above

Answer 1

The correct option is A

Hemolymph

The Correct option is A.

Explanation of the correct option:

1. Malpighian tubules' main function is the regulation and control of hemolymph composition and volume.
2. They respond in appropriate ways to alterations in the composition of hemolymph.
3. Structurally these are thin, slender tubes that connect the hindgut to the midgut. They absorb solutes, ions, waste, and water from the surrounding hemolymph. The waste is then released from the organism’s body in the form of nitrogenous compounds.

Explanation of the incorrect options:

Option B:

1. The alimentary canal functions primarily to convert food into absorbable particles and to pass them on to the other organs of the body.
2. It is divided into foregut, midgut, and hindgut. The foregut opens into a gap, where undigested food is temporarily stored. The mouth opens into a short tubular pharynx, leading to a narrow tubular passage, the esophagus.
3. The gastric sacks contain bacteria that help in the digestion process.

Final Answer: Malpighian tubules remove excretory matter from the hemolymph.