Haemolymph is cockroach is devoid of

Options

A. plasma
B. haemocytes
C. amino acids
D. respiratory pigment

Explanation

**Step-by-Step Solution:**

1. **Understanding Hemolymph**: Hemolymph is the fluid that functions similarly to blood in invertebrates like cockroaches. It is colorless and serves various functions, including nutrient transport and waste removal.

2. **Components of Hemolymph**: The hemolymph of a cockroach consists of:
- **Plasma**: The liquid component that is clear or transparent.
- **Hemocytes**: These are the white blood cells present in the hemolymph that are involved in immune responses.
- **Nutrients**: Such as amino acids, proteins, and minerals.

3. **Identifying the Absence**: The question asks which component is absent in the hemolymph of a cockroach. We need to analyze the options provided:
- **Option 1: Plasma** - This is present in hemolymph.
- **Option 2: Hemocytes** - These are also present in hemolymph.
- **Option 3: Amino Acids** - These are present as nutrients in hemolymph.
- **Option 4: Respiratory Pigment** - This is absent in the hemolymph of cockroaches.

4. **Conclusion**: Since the only component that is not found in the hemolymph of a cockroach is the respiratory pigment, the correct answer is **Option 4: Respiratory Pigment**.

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