Question

Location of Malpighian tubules in Periplaneta:

• A. Foregut - Hindgut
• B. Midgut - Foregut
• C. Hindgut - Midgut
• D. Stomodeum - Proctodeum

Hint:

In studying insect physiology, noting the location and function of Malpighian tubules can provide insights into how insects maintain ionic and water balance, crucial for their survival in diverse environments.

Answer 1

The Correct Option is C

Understanding the anatomy of Periplaneta.
Malpighian tubules are specialized structures in insects that serve as the primary site of waste excretion and osmoregulation. In Periplaneta (the common cockroach), these tubules are strategically located at the junction of the midgut and hindgut. This placement allows them to efficiently filter out waste from the hemolymph (insect blood) as it circulates through these regions.

Answer 2

To solve the problem, we need to identify the correct location of Malpighian tubules in *Periplaneta* (cockroach).

1. Understanding Malpighian Tubules in Periplaneta:
Malpighian tubules are excretory structures found in insects, including *Periplaneta* (cockroach). They are responsible for waste removal and osmoregulation. These tubules are located in the hindgut, midgut, and foregut regions of the insect's digestive system.

2. Analyzing the Options:
(1) Foregut - Hindgut: This is incorrect because Malpighian tubules are located between the midgut and hindgut, not in the foregut.
(2) Midgut - Foregut: This is incorrect because Malpighian tubules are not located between the midgut and foregut.
(3) Hindgut - Midgut: This is the correct option. Malpighian tubules are located in the hindgut region, and they open into the midgut, as is characteristic of *Periplaneta*.
(4) Stomodeum - Proctodeum: This is incorrect as the stomodeum and proctodeum are regions of the digestive tract, but they do not house the Malpighian tubules.

3. Identifying the Correct Answer:
The correct location of Malpighian tubules in Periplaneta is between the hindgut and midgut.

Final Answer:
The correct answer is Option C: Hindgut - Midgut.