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  4. The function of clitellum in Pheretima is:

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Q. The function of clitellum in Pheretima is:

Jharkhand CECEJharkhand CECE 2003

Solution:

Clitellum is a girdle-like thick band of glandular tissue, which completely and permanently surrounds the segments $14$ to $16$ . Clitellum secretes mucus, albumen and an egg case or cocoon for eggs. Respiration in Pheretima takes place by diffusion of gases through general body surface. Intake of $O _{2}$ and giving out of $CO _{2}$ takes place between blood capillaries of outer epidermis and surface film of mucus. The haemoglobin (dissolved in plasma) acts as respiratory pigment.