![]() Leeches are flat & short in structure & black in colourĮarthworms can regenerate for asexual reproduction Leech therapy (or Hirudotherapy) has been used in some areas of medicine such as plastic and reconstructive surgery to remove swelling and congestion in tissues and blood vessels.Įarthworms are thin, elongated & round in structure & white in colour Fresh earthworm casts are rich in nitrogen, phosphates and potash. Leeches move with the help of the anterior and posterior suckers and longitudinal muscles along the length of the body.Įarthworms aerate the soil while burrowing, feed on organic matter and increase its fertility in the process by adding humus to the soil. Leeches are of three types -freshwater, terrestrial and marine. The setae (bristles) on the segments along the body and mucus secreted also aid in this movement They move by means of contraction and relaxation of muscles which shorten and lengthen the body and aids in movement. Reproduction occurs after copulation and is followed by cocoon formation in which the embryos develop.Įarthworms mainly live in the soil. Leeches are also hermaphrodites with both male and female reproductive organs. Reproduction takes place after copulation. During copulation sperms are exchanged between two worms and stored. ![]() Other species feed on decomposing bodies and open wounds of amphibians, reptiles, fish and even mammals.Įarthworms are hermaphrodites and have two pairs of testes surrounded by testes sac, ovaries and ovipores. Some species of leech (hematophagus) feed on blood. The body of a leech is divided into 34 segments with a small anterior and large posterior sucker.Įarthworms feed on organic matter found in the soil such as dead leaves and small soil particles that are digested in the intestine. Leeches are also worms belonging to Phylum Annelida, Class Clitellata and sub class HirudinaeĮarthworms have a segmented (37-100) tube-like muscular body connected by a continuous gut, a nerve and a blood vessel. ![]() Comparison chart Earthworm versus Leech comparison chartĮarthworms are big segmented worms that belong to the Phylum Annelida, Class Clitellata, and sub class Oligochaeta.
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