Class 11 Exam > Class 11 Questions > The brown skin colour of Pheretima is due to-...
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The brown skin colour of Pheretima is due to-
- a)Haemoglobin
- b)Haemoerythrin
- c)Porphyrin
- d)Chromophils
Correct answer is option 'C'. Can you explain this answer?
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The brown skin colour of Pheretima is due to-a)Haemoglobinb)Haemoeryth...
The brown skin colour of Pheretima is due to:
- Porphyrin: Pheretima, commonly known as earthworms, have a brown skin color due to the presence of porphyrin pigments. Porphyrins are organic compounds that contain a tetrapyrrole ring structure. These pigments are responsible for the brown coloration in earthworms.
Other possible options:
- Haemoglobin: Haemoglobin is a protein responsible for transporting oxygen in the blood of many animals. While haemoglobin does contribute to the red coloration of blood, it is not the primary pigment responsible for the brown skin color in Pheretima.
- Haemoerythrin: Haemoerythrin is a respiratory pigment found in some marine invertebrates. It is responsible for oxygen transport in these organisms. However, it is not present in earthworms and therefore not responsible for their brown skin color.
- Chromophils: Chromophils are cells or structures that contain pigments and contribute to coloration in organisms. While earthworms do have chromophils, they are not the main reason for their brown skin color.
In conclusion, the brown skin color of Pheretima is primarily due to the presence of porphyrin pigments.
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The brown skin colour of Pheretima is due to-a)Haemoglobinb)Haemoeryth...
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The brown skin colour of Pheretima is due to-a)Haemoglobinb)Haemoerythrinc)Porphyrind)ChromophilsCorrect answer is option 'C'. Can you explain this answer?
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