Read the following statements and find out the INCORRECT statement for a cockroach.

Options

A. The blood (haemolymph) is composed of colourless plasma and haemocytes
B. Heart of cockroach consists of an elongated muscular tube lying along mid-ventral line of thorax and abdomen.
C. The hindgut is broader than midgut and differentiated into ileum, colon and rectum
D. Both gizzard and mandible help in grinding the food particles.

Answer

To solve the question regarding the incorrect statement about cockroaches, we will analyze each statement provided and determine which one is false.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- **Statement:** "The blood that is hemolymph is composed of colorless plasma and hemocytes."
- **Analysis:** This statement is correct. In cockroaches, the blood (hemolymph) is indeed colorless and contains hemocytes, which are involved in immune responses.

2. **Analyze the Second Statement:**
- **Statement:** "Heart of cockroach consists of elongated muscular tube lying along the mid ventral side of thorax and abdomen."
- **Analysis:** This statement is incorrect. The heart of a cockroach is actually located along the mid dorsal side of the thorax and abdomen, not the ventral side.

3. **Analyze the Third Statement:**
- **Statement:** "The hindgut is broader than midgut and differentiated into ilium, colon and rectum and these are the excretory parts of the cockroach."
- **Analysis:** This statement is correct. The hindgut is indeed broader than the midgut and is divided into the ileum, colon, and rectum, which are involved in excretion.

4. **Analyze the Fourth Statement:**
- **Statement:** "Both gizzard and mandible help in grinding the food particles."
- **Analysis:** This statement is correct. The gizzard and mandibles of the cockroach are responsible for grinding food particles due to their muscular structure and the presence of teeth.

5. **Conclusion:**
- After analyzing all statements, the second statement is identified as the incorrect one.

### Final Answer:
The incorrect statement regarding the cockroach is: "Heart of cockroach consists of elongated muscular tube lying along the mid ventral side of thorax and abdomen."

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