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Define Transverse section of body of ascaris lumbricoides?The transverse sections of male and female A, lumbricoides exhibit some differences based on their sex. T.S. of Female Ascaris1. Body wall consists of the following:(a) Cuticle is the outermost layer. It is a thick, tough, elastic membrane covering the epidermis.(b) Epidermis, also called subcuticle, lies below the cuticle and is syncytial.(c) Muscle layer is the innermost layer of the body wall and is composed of a single layer of spindle-shaped muscle cells arranged longitudinally.2. Epidermis is thickened into ridges in four regions which project into the body cavity as the four longitudinal chords (also called lines) of which two are lateral, one dorsal and one ventral.3. Presence of the four longitudinal cliords results in. the easy identification of four bands of muscles - two dorso-lateral and two ventro-lateral.4. Two lateral excretory canals are visible inside the two Iateral lines or chords.5. Dorsal and ventral nerves run in the dorsal and ventral lines respectively.'6. The space between the body wall and alimentary canal is the pseudocoel (false body cavity), Pseudocoel has fibrous tissue and fixed cells called coelonrocytes or pseudocoelocytes or giant cells. 7. Pseudocoeloln contains the transversely cut portions of alimentary canal, uteri, oviducts and ovaries.8. In ovaries lumen is absent . Ovaries have a central rachis with 'the young eggs clustered around it.9. Uterus has a wide lumen which is loaded with unfertilized eggs. Eggs have single muscles and cytoplasm.10. Oviducts contain eggs in lumen.11. Ovary, oviduct and uterus are elongated and coiled strictures for which reason they appear more than one in sections.12.intestine is visible as a dorso-ventrally flattened structure formed of a single layer of columnar epithelial cells, lined externally by a thin layer of cuticle. Intestine has no muscle layer.
carnt understand its principle and mode of working
Basic characters of vertebrate classes
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#question.what do u mean by parasitic habit.give account of various parasitic adoptation in animal.
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