Phylum Nematoda - Chapter 22 Nematodes or roundworms are among the most abundant animals on earth - over 500,000 species have been described.
Elongated and cylindrical. at Trace the pathway of the sperm cells in the organ system.
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It produces the female egg cells necessary for reproduction, called the ova or oocytes.
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• Conception, the fertilization of an egg by a sperm, normally occurs in the fallopian tubes. If you continue browsing the site, you agree to the use of cookies on this website.
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Reproductive System Nematodes are dioecious Both sexes look alike Reproductive system is tubular Males v/s Females • Males are slightly shorter • Tail end curved ventrally • Possess secondary sexual organs • Spicules • Gubernaculum • Bursa 23 7/20/2017Walia CCSHAU 24.
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They have a complete digestive tract with both oral and anal openings.
If you continue browsing the site, you agree to the use of cookies on this website. Characteristics Free-living or parasitic Most very small < 2mm, some 1m long Abundant (100 in a cupful of soil) >20,000 named species, many others undescribed Radial symmetry - cylindrical body Pseudocoelomate - false body cavity Tough cuticle must be shed to grow Has cephalization Reproductive System 1. no peritoneal lining , containing transport of solution, electrolytes, proteins, fats function: protecting the internal organs, helping the movement and excretion of the … 6 months ago
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between the tubes is the fluid- filled pseudocoelom, in which the reproductive system and other structures are found.
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7 months ago Identify the structures and major organs of the male reproductive system and describe their functions.2. Our Body Systems 2.
Majority of nem… Your message goes here
Nematoda roundworms 2.
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See our Why do we need to reproduce? GENERAL CHARACTERISTICS OF NEMATODES They assume three basic morphologic forms: Egg, Larvae and Adult worms Reproduce sexually with male and female worms Complete digestive tract and complete reproductive systems 3.