Animals, one, long, soft body, constituted by a number of areas, the film surface like glass, head, thorax and abdomen is not clear, intestines long and straight, front-end for the mouth, back to the anus, such as earthworms, leeches and so on.
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No. 2
Annelid (annelida). Cylindrical length or long, flat, symmetrical, from many areas around the connecting synthesis. Some sections of the appendages, without distinction, namely, foot warts; some no appendages, _set_ae only to junior sport. Most significantly the body cavity. Distribution in sea water, fresh water and soil, a small number of parasites. Ring worm can be divided into the original classes (such as angle worms), hair full classes (such as Nereis, earthworm) and vermiculite classes (such as leech) three bonds. The original ring worm Programme (archiannelida) system is relatively simple surface no obvious link, and no warts foot or bristle. Significant event of trochophore larvae. For example, angle worms (polygordius), thin body and long, habitat near the low tide line in the sand and mud. Gross Foot Gang (chaetopoda) lanes are cylindrical or slightly flattened dorsoventrally. Surface areas shown, there chitin into the bristles. Separable polychaetes and Oligochaeta, the former as Nereis, sand scorpion, marine; the latter, such as earthworms, insects fairy, terrestrial or freshwater. Polychaetes (polychaeta) full outline of a head hair. Body length, composed of the majority of links, each link has a pair of foot warts, on lots of bristles. Sections have gills for breathing. Mostly dioecious. Marine. Occurs when abnormal phenomenon. Such as Nereis, sand Zhu and so on. Nereis (nercis) hair full classes, Nereis Division. Body section was, on both sides of the body section into a bristly warts prominent enough for action. Length 10 cm. Sediment habitats, the reproductive season or out at night feeding, they can swim. Many of the Yellow Sea and Bohai Sea coast. For fish, shrimp, crabs and other animals of prey. Belong to a variety distributed in the Yangtze River estuary, Japan Nereis (n.japonica), commonly known as "water a hundred feet," 'Autumn often traced by the sea or to the paddy fields of reproductive mouth. Guangdong people are eating, "He Chong," from the rice fields, is the same family of wart kiss Nereis (tylorrhynchus heterochaeta). Oligochaeta (oligochaeta) full outline of a head hair. A long cylindrical body, constituted by the majority of areas. Cuticle surface is colorless; various aspects of wart-free feet, bristles Central students, clustered or students. Hermaphrodite. Terrestrial or aquatic. Such as earthworms, earthworm stomach together, white line earthworm, insect fairies, LIMNODRILUS and so on. Fairy insects (nais variabilis) Branch Fairy insects. Body transparent, long 3-10 mm. There is a pair of focus, back bristles start from Section VI. Camp is usually split the body of reproductive, sexual, or business. Live in freshwater. For the freshwater fish diets. LIMNODRILUS (limnodrilus hoffmeisteri) flutter Lumbricidae. Slender, 5-6 cm long. Reddish-brown, yellow-green back, the end of each side of the four blood vessels, the formation of vascular network, Camp respiration. Generally, each section has four beams _set_ae. Ditches and other shallow water habitat, front end buried in sludge, tail swaying in the water. Distributed all over the country. Can be used as predator fish. Seedlings in paddy fields can be hazardous. White line earthworm (fridericia bulbosa) line Lumbricidae. Body small, 4-15 mm long, usually pale or transparent. Living in the vicinity of roots or roots. Can be cultured in the room used as bait. Taiwan stomach earthworm (desmogaster sinensis), also known as "Chinese joint stomach earthworm", chain stomach Lumbricidae. Body length and large, up to 54 cm. Body wall smooth, slightly transparent, nearly white, the front end slightly pale yellow. In addition to the first three quarters, each link is divided into four individual rings. Zone was not significant. Produced in China, Suzhou, Wuxi and Nanjing area, is a rare animal. Worms, commonly known as "earthworm", commonly known as "good at music." Oligochaeta. Many types. Common, such as Zhili Megascolecidae Pheretima (pheretima tschiliensis) lanes are long cylindrical, up to 40 cm, each section of the Central Health _set_ae ranging from tens to hundreds of articles. Back dark brown, belly white. Germ band ring, in the first section between 14-16. Spermatheca hole 3 pairs. The soil with organic matter to feed on. 1-3 eggs, production of "earthworm cocoon", the after hatch around January. Varies widely, both north and south China. For the improvement of the soil, play an important role. Can be used for poultry or fish prey. The whole insect in medicine medicine, cold, salty taste, functional heat, the frightened and diuretic. According to the research reported and the proposed composition of earthworms can relax smooth muscle and lower blood pressure. Vermiculite Programme (hirudinea) Annelida a key link. Generally long and flat body, twenty-seven, part of the surface of the body ring, no bristles, before and after each one sucker. Live in freshwater or moist place, most of the semi-parasitic life business. Such as the leech, leeches, fish, vermiculite, vermiculite and other mountains. Fish leech (trachelobdella sinensis), also known as "Chinese neck leech", the fish leech Division. Body length, back slightly elevated, more than 10 cm long. Transverse oval head, neck short and narrow, wide flat elongated round body, a few rows of yellow spots, after the big sucker. Pale yellow or gray in color, with pink ring. Side of the body 11 of the circular skin pouch, can be rhythmic stretching. Parasitic in the common carp, crucian carp and other fish under the gill cover, drawing blood, harmful to the fish industry. Distributed around the Yangtze River and the Heilongjiang River. Leech (whitmania) a genus of leech. Our common for wide-body leech (w.pigra) also known as "wide-body golden frog." Slightly spindle-shaped body, flat and more fat, 6-13 cm long. The back is usually dark green, light yellow with five black longitudinal stripes intermingled. Before the suction cup is small, the mouth with teeth, but less developed. Distribution is common in China, paddy fields, rivers and lakes Lieutenant Colonel common predator of small animals. Although able to stab the skin, but do not suck blood. In the medical processing to body after dried medicine. Haemadipsa (haemadipsa japonica), also known as "grass leech" leeches Division. Body roughly cylindrical, about 3 cm. Body yellowish brown, dark brown back and a vertical line. Living in the mountains of the swamp, people passing through its side, that is attached to the shares of the tibia, into the flesh, the sucking of blood, is easy to become sore at the sting.
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No. 3
Annelid annelid Also for Segmented Worm. Annelid (Annelida) in animal evolution to a higher stage of development is the beginning of higher invertebrates. About 9,000 species. Vitro secretion of epidermal cells from the cuticle, body wall muscle and a one outer longitudinal muscle layer within. Usually chitinous _set_ae, arranged by section. Anterior lobe has a head or mouth, with or without appendages. Closed circulation system, the blood usually have respiratory pigment. Section of the body cavity by the diaphragm into the chamber, split the body cavity of origin. Worldwide distribution, found in various habitats, especially in the ocean, in fresh water or wet soil. Divided into 3 classes. Free and _set_tled types of reproductive similar. Usually dioecious, no permanent gonads. Germ cells prior to the start of sexual maturation from mesoderm, body cavities and warts foot one of these three categories to form embryonic tissues. The developing eggs and sperm shed into the body cavity, from special cells to obtain nutrients nutrition. Mature eggs and sperm through the reproductive tubes dynamic, renal holes or routed to the external body wall rupture. Prior to this, the body may change dramatically, the most amazing variation and runners is a mature branch propagation. Genus Nereis (Nereis), and crack Genus (Syllis) both are free of polychaetes, concentrated area of occurrence of mature product variation. Morphological changes include larger eyes, a certain number of warts foot change, the replacement of _set_ae and anal sperm to produce a release device. At sexual maturity, they leave the cave to swim, and then release sperm. Such as to take away their brain, morphological changes, but not ejaculation, and eggs. Under normal circumstances no mature variation, in addition to the role of brain surgery does not produce. Apparently resulted in a mature hormone variation exists only in the type of variation in the maturity. Crack worms can grow one or more roots, containing gametes. Control of reproductive hormones branches prostrate form in the digestive tract. Some _set_tled polychaetes have another variation of mature, their leaves have long thin pseudopods _set_ae. Whole worm or just leave the rear of the body tube or cave, swimming in the sea, and then release the gametes. A free swimming trochophore larvae, the typical diamond-shaped, maximum width of a circle of cilia, called cilia round before, and later may be a cluster of cilia in the back end, that end of cilia round. After the previous round of cilia may also be a second round, namely, the cilia round. Trochophore larvae of the upper part (above the front wheel cilia) in the future before the leaves into mouth (head), a brain, eyes, mouth and appendages, lower part of a digestive tract, kidney and other internal organs of the original, but also in the future section of the site. Almost the same time the formation of the first three quarters, and soon the leaves and the larvae grow pseudopod bristle. Continuously from the tail section to form a new section (all sections to increase the formation by the tail section), body growth. _Set_ae generally fall off the first section of this section into the adult section of the tube mouth, and its development as a leaf or pseudopodia around mouth appendages, or atrophy, due to species-specific. The second and third larval _set_ae gradually replaced by adult bristle. Larvae are feeding and whether the species of ocean life varies during the Yi Yin. After finding a place to _set_tle, rapidly losing the characteristics of larvae, starting as adults. Hermaphrodite rare, and some sex can change. A few species can reproduce asexually _set_tlement, the section from the body, or a grow a new individual. About 5,400 species of polychaetes. Most live in the sea, floating, cave, walk or tube in the seabed habitat; also in the river, lake. 2. Oligochaeta (Oligochaeta) ︰ somite similar. Anterior lobe of the general population without appendages, just a leaf hanging in the mouth. When sexual maturity band. Anal in the back end, bristle out directly from the body wall, usually in the ventral body. Hermaphrodite. Sperm are usually stored in the seminal vesicle in the first, and then hung from the vas deferens through the hole. Ovaries fallopian tubes to the rear section of the female holes. Mating, two earthworms ventral relative, exchange sperm. Two types of male low earthworm holes Calvary hole and relative spermatheca, the male sperm directly from the side hole into the other hole by the seminal vesicle. However, some worm hole from a male band far, the first sperm to flow along the surface of the fine groove band, and then to the other side of the hole by the seminal vesicle. Eggs in the egg cocoon, when the egg cocoon slide forward along the body, through the hole by the seminal vesicle, discharged from the hole from another earthworm sperm, fertilized in the cocoon. Protection zone is not only the eggs of egg cocoon secretion, but also secrete nutrients for the larvae, and mating of the slime. Direct development. Asexual reproduction in the aquatic oligochaete common practice in some fairy insect no sexual reproduction. Some divided into two or more individuals of a chain, then off to become juvenile earthworm. About 300 species, mainly in fresh water or on land. 3. Vermiculite Programme (Hirudinea) ︰ ago, back-end have a sucker, sucker before the smaller. Somites is fixed at 34 knots, but the body is divided into several sections often rings, body middle section of each body is generally divided into 3 to 5 individual rings. Front usually have 1 to 5 eye. Band saw in the reproductive period. Hermaphroditism, sexual reproduction. Palate of sperm through a leech leech's penis into the vagina of another leech. Vermiculite and vermiculite stone kiss the sperm from the spermatophore into the body of another leech. Eggs in the egg cocoon, egg cocoon attached to rocks or plants generally, or grown in soil. However, thin tongue leech cocoon membranes, attached to the ventral body development, direct development. About 300 species, mainly distributed in fresh water and land, a small number of seafood. Part of animals and humans are closely related. Lu is earthworm (Lumbricus terrestris) can be used as training bait, but also generate humus in the soil. Earthworm genus Oscillatoria (Tubifex) a lot happened in the sewer near the exit can be used as pollution indicator organisms, but also for tropical fish diets. Polychaetes can be used as fish food-stuffs. Rocky Nereis (palolo worm, scientific name Leodice viridis; wave Lou pull worms) reproductive reproductive part of a large number of loss in the South Pacific, Samoa (Samoan Islands) were used as food. Originated in the marine annelid, possibly through the trochophore as ancestors evolved. From the original species of polychaetes to oligochaetes evolution, leech class also has zoning, may be caused by a common ancestor evolved from the Oligochaeta. Annelid (Annelida). Cylindrical length or long, flat, symmetrical, connected by a front body section of many morphologically similar combination of morphological somite performance of the external surface of the ring pattern. Some sections of the appendages, without distinction, namely, foot warts; some no appendages, _set_ae only to junior sport. Most significantly the body cavity. Promote the emergence of somites annelid morphology and physiological function of further development. Annelida about 3,500 species in sea water, fresh water and soil, a small number of parasites. Ring worm can be divided into the original classes (such as angle worms), hair full classes (such as Nereis, earthworm) and vermiculite classes (such as leech) three bonds. The original ring worm Programme (Archiannelida) system is relatively simple surface no obvious link, and no warts foot or bristle. Significant event of trochophore larvae. For example, angle worms (Polygordius), thin body and long, sand and mud habitats in the low tide line in the vicinity. Gross Foot Gang (Chaetopoda) lanes are cylindrical or slightly flattened dorsoventrally. Surface areas shown, there chitin into the bristles. Separable polychaetes and Oligochaeta, the former as Nereis, sand scorpion, marine; the latter, such as earthworms, insects fairy, terrestrial or freshwater. Polychaetes (Polychaeta) full outline of a head hair. Body length, composed of the majority of links, each link has a pair of foot warts, on lots of bristles. Sections have gills for breathing. Mostly dioecious. Marine. Occurs when abnormal phenomenon. Such as Nereis, sand Zhu and so on. Nereis (Nercis) hair full classes, Nereis Division. Body section was, on both sides of the body section into a bristly warts prominent enough for action. Length 10 cm. Sediment habitats, the reproductive season or out at night feeding, they can swim. Many of the Yellow Sea and Bohai Sea coast. For fish, shrimp, crabs and other animals of prey. Belong to a variety distributed in the Yangtze River estuary, Japan Nereis (N.japonica), commonly known as "water a hundred feet," 'Autumn often traced by the sea or to the paddy fields of reproductive mouth. Guangdong people are eating, "He Chong," from the rice fields, is the same family of wart kiss Nereis (Tylorrhynchus heterochaeta). Oligochaeta (Oligochaeta) full outline of a head hair. A long cylindrical body, constituted by the majority of areas. Cuticle surface is colorless; various aspects of wart-free feet, bristles Central students, clustered or students. Hermaphrodite. Terrestrial or aquatic. Such as earthworms, earthworm stomach together, white line earthworm, insect fairies, LIMNODRILUS and so on. Fairy insects (Nais variabilis) Branch Fairy insects. Body transparent, long 3-10 mm. There is a pair of focus, back bristles start from Section VI. Camp is usually split the body of reproductive, sexual, or business. Live in freshwater. For the freshwater fish diets. LIMNODRILUS (Limnodrilus hoffmeisteri) flutter Lumbricidae. Slender, 5-6 cm long. Reddish-brown, yellow-green back, the end of each side of the four blood vessels, the formation of vascular network, Camp respiration. Generally, each section has four beams _set_ae. Ditches and other shallow water habitat, front end buried in sludge, tail swaying in the water. Distributed all over the country. Can be used as predator fish. Seedlings in paddy fields can be hazardous. White line earthworm (Fridericia bulbosa) line Lumbricidae. Body small, 4-15 mm long, usually pale or transparent. Living in the vicinity of roots or roots. Can be cultured in the room used as bait. Taiwan stomach earthworm (Desmogaster sinensis), also known as "Chinese joint stomach earthworm", chain stomach Lumbricidae. Body length and large, up to 54 cm. Body wall smooth, slightly transparent, nearly white, the front end slightly pale yellow. In addition to the first three quarters, each link is divided into four individual rings. Zone was not significant. Produced in China, Suzhou, Wuxi and Nanjing area, is a rare animal. Worms, commonly known as "earthworm", commonly known as "good at music." Oligochaeta. Many types. Common, such as Zhili Megascolecidae Pheretima (Pheretima tschiliensis) lanes are long cylindrical, up to 40 cm, each section of the Central Health _set_ae ranging from tens to hundreds of articles. Back dark brown, belly white. Germ band ring, in the first section between 14-16. Spermatheca hole 3 pairs. The soil with organic matter to feed on. 1-3 eggs, production of "earthworm cocoon", the after hatch around January. Varies widely, both north and south China. For the improvement of the soil, play an important role. Can be used for poultry or fish prey. The whole insect in medicine medicine, cold, salty taste, functional heat, the frightened and diuretic. According to the research reported and the proposed composition of earthworms can relax smooth muscle and lower blood pressure. Vermiculite Programme (Hirudinea) Annelida a key link. Generally long and flat body, twenty-seven, part of the surface of the body ring, no bristles, before and after each one sucker. Live in freshwater or moist place, most of the semi-parasitic life business. Such as the leech, leeches, fish, vermiculite, vermiculite and other mountains. Fish leech (Trachelobdella sinensis), also known as "Chinese neck leech", the fish leech Division. Body length, back slightly elevated, more than 10 cm long. Transverse oval head, neck short and narrow, wide flat elongated round body, a few rows of yellow spots, after the big sucker. Pale yellow or gray in color, with pink ring. Side of the body 11 of the circular skin pouch, can be rhythmic stretching. Parasitic in the common carp, crucian carp and other fish under the gill cover, drawing blood, harmful to the fish industry. Distributed around the Yangtze River and the Heilongjiang River. Leech (Whitmania) a genus of leech. Our common for wide-body leech (W.pigra) also known as "wide-body golden frog." Slightly spindle-shaped body, flat and more fat, 6-13 cm long. The back is usually dark green, light yellow with five black longitudinal stripes intermingled. Before the suction cup is small, the mouth with teeth, but less developed. Distribution is common in China, paddy fields, rivers and lakes Lieutenant Colonel common predator of small animals. Although able to stab the skin, but do not suck blood. In the medical processing to body after dried medicine. Haemadipsa (Haemadipsa japonica), also known as "grass leech" leeches Division. Body roughly cylindrical, about 3 cm. Body yellowish brown, dark brown back and a vertical line. Living in the mountains of the swamp, people passing through its side, that is attached to the shares of the tibia, into the flesh, the sucking of blood, is easy to become sore at the sting.