Question

In Pheretima, there are red coloured round bodies in $4^{th,}{5}^{th}$ and $6^{th}$ segments above the alimentary canal. They are believe to be involved in-

• A. Excretion
• B. Leucocyte production
• C. Digestion
• D. Reproduction

Answer 1

The correct option is B Leucocyte production

Earthworms/Pheretima belong to the phylum Annelida that has a segmented body. These exhibit closed type of circulatory system. In segments 4, 5 and 6, red colour follicular bodies called as blood glands are present, which are involved in the production of blood cells and haemoglobin which is dissolved in the plasma. Blood cells (Leukocytes) are phagocytic in nature.

So, the corret answer is- leucocyte production.