Economic Importance of Earthworm! Useful Affairs of Earthworms: The earthworms are better known as the friend of farmers due to the following reasons: 1. The earthworms improve the fertility of soil in different ways and, therefore, they are of utmost importance in agriculture. Actually, the burrowing and soil feeding habits of earthworms make the soil porous which permit both aeration [...]
Reproductive System of Pheretima (Earthworm)! Male Reproductive Organs of Earthworm: The male reproductive organs consist of testes, testis sacs, seminal vesicles, vasa deferentia, prostate glands and accessory glands. Testes and Testis Sacs: The testes are two pairs, very minute, whitish and lobed structures situated one pair each in segment 10th and 11th found attached with the posterior surface of 9/10 [...]
Digestive System of Earth Worm! Alimentary Canal of Earth Worm: The alimentary canal runs as a straight tube throughout the length of the body from the mouth to the anus. It consists of the following regions: 1. Mouth and Buccal Chamber: The mouth is a crescentic aperture lying below the prostomium. The mouth leads into a short, thin-walled tube called [...]