Blood of Earthworm is red because its haemoglobin is

Options

A. reduced
B. oxidised
C. intracellular
D. intercellular

Answer

**Step-by-Step Solution:**

1. **Understanding the Blood Composition in Earthworms:**
- The blood of earthworms contains a protein called hemoglobin, which is responsible for its red color.

2. **Identifying the Nature of Hemoglobin:**
- In earthworms, hemoglobin is not contained within blood cells (like in mammals) but is dissolved in the plasma.

3. **Defining Hemolymph:**
- The blood of earthworms is referred to as hemolymph, which is a fluid that circulates nutrients and gases throughout the body.

4. **Recognizing the Function of Hemoglobin:**
- Hemoglobin in earthworms serves as an oxygen-carrying pigment, facilitating the exchange of gases.

5. **Analyzing the Options:**
- The options provided are:
- A) Reduced
- B) Oxidized
- C) Intracellular
- D) Extracellular
- Since hemoglobin in earthworms is dissolved in the plasma and not contained within cells, the correct term to describe its nature is "extracellular."

6. **Conclusion:**
- Therefore, the blood of the earthworm is red because its hemoglobin is extracellular.

**Final Answer:**
The blood of the earthworm is red because its hemoglobin is extracellular.

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