Nitrogenous waste in the Malpighian tubule flows into

Options

A. Haemocoel
B. Intestine
C. Vacuole
D. Duodenum

Answer

To answer the question "Nitrogenous waste in the Malpighian tubule flows into," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Malpighian Tubules**:
- Malpighian tubules are excretory structures found in insects, such as cockroaches and grasshoppers. They play a crucial role in the excretion of nitrogenous waste and osmoregulation.

**Hint**: Remember that Malpighian tubules are specific to insects and function as excretory organs.

2. **Function of Malpighian Tubules**:
- These tubules extract nitrogenous waste from the hemolymph (the insect equivalent of blood) and transport it to the digestive system.

**Hint**: Focus on the relationship between hemolymph and the excretory process.

3. **Connection to the Digestive System**:
- The Malpighian tubules are blind-ended structures that open into the intestine. Specifically, they connect to the junction of the midgut and hindgut of the insect's digestive tract.

**Hint**: Think about where the waste goes after being collected by the tubules.

4. **Identifying the Correct Answer**:
- Since the nitrogenous waste flows from the Malpighian tubules into the intestine, the correct answer to the question is option B: intestine.

**Hint**: Eliminate other options by recalling the anatomical structure and function of the Malpighian tubules.

### Final Answer:
The nitrogenous waste in the Malpighian tubule flows into the intestine (Option B).