Question 2: What types of shells are there? Shell information: mollusks almost all have shells - shells. Shellfish*** are divided into five major groups, namely Gastropoda, Bivalvia, Digitata, Polyplata, and Cephalopoda. Each group is subdivided into several distinct groups. Gastropoda Shells: Most gastropod shells have small posterior plumbing grooves at the back of the shell opening and plumbing grooves at the front of the shell opening. There may be pleated folds on the spiracle axis and convex teeth on the outer lip. The oral surface of the shell is observed to be in the shape of a hat, auricular, turbinate, screw, pear, fusiform, luteal, and clavate. Bivalve shells: these shells are composed of two shells, the left and right shells are connected by a ligament; the ligament can be seen from the bottom of the shell when the two shells are closed. The shape is disk-shaped, fan-shaped, boat-shaped, paddle-shaped, a few are heart-shaped and irregularly shaped. Shells of other phyla: the shells of Polyplatyhelminthes, Digitopoda and Cephalopoda are far less abundant than those of Gastropoda and Bivalvia, no matter in the variations of species or morphology. All digitigrade shells are ivory, and the rare cephalopods are almost uniform in shape and size; the shell plates of polyplates are ornamented. Shell growth: immature shells are very similar to mature shells, except for their size. Bivalves grow along the edges of both shells, and the direction of growth does not change as the shell grows. Gastropods grow in a self-coiling fashion along the mouth of the shell of the spiral tube. Components of the shell: Calcium carbonate is the most basic substance that makes up the shell. Another component is shell protein, which will be found in the mouth cap of gastropods. This is secreted in layers, making the shell harder and harder, and in some cases producing a pearly luster. The hard shells increase in size from the outer edge and thicken as they grow. Shellfish also secrete scales, tumors, spines, and ribs on the growing outer edge. Because of the periodicity and continuity of growth, shells display beautiful colored patterns. Collecting Shells: Clean the shellfish of flesh, debris, and shell appendages, make sure the shells are completely dry, and store them in a light-blocked, airtight place. The final step is to label and sort the shells into categories to facilitate collection and retrieval. Shellfish Habitat: Mollusks have adapted to a variety of habitats, from rocky outcrops where the sea washes over them day and night, to the murky depths of the ocean floor, all of which have their own specialized mollusc fauna. Tides influence the characteristics and distribution of mollusks growing on the seashore, and abundant sunlight provides a rich diet. The variety of sea shells in the tropics, where mollusks are best suited to inhabit, is breathtaking. Protecting the habitat: Humans should try not to destroy the habitat of living things as much as possible. Underneath almost every rock and coral reef is a community of plants and animals that would be devastated if it were destroyed. If one piece of coral is cut from a reef, the rest of the reef dies. If a beach is constantly being searched by sea shell collectors, the natural habitat of the creatures will be gradually destroyed, so please respect the living space of these lowly and defenseless animals. There is a wide variety of shells and conch shells in strange shapes and colors. Among them, tiger shells, white jade shells, luminous shells, five-clawed conch, pig mother conch, pearl shells, chaste conch, Tang Guan conch, seven-horned shells, pig's ear shells, as well as ashtrays can be used as horseshoe conch, fishermen role of the horn horn of the large horns conch, etc., is a favorite natural handicrafts, with smooth and oily sea shells carved, inlaid with all kinds of paintings made of the screen, appliances, furnishings, etc., with the color of the bright and beautiful natural, noble and elegant style characteristics. Shells are made into a variety of practical handicrafts, such as wine, ornaments, pendants, necklaces, chest ornaments, etc., exquisite and luxurious not less than jade. Shell carving is also very distinctive. Hainan shell carving craft in the Ming Dynasty has a very high level, and gradually and the ancient coconut carving process combined to form a unique artistic style. All refined Hainan shell carving, and coconut carving, inlaid, or coconut carving for the seat frame. Bright shell carving and simple coconut carving contrast, eye-catching. Bivalve shell has two petals shell, generally ovate, shell body side flat, shell body size is very different. Most bivalves live in the sand, but some can swim freely and are filter feeders, able to feed on microscopic plankton in the water. These shells are common in Hong Kong waters and most of the Indo-Pacific region. They are colorful, beautifully shaped, smooth and bright, and vary in size from egg to ovoid, with the sides of the shell spiraling and folding inward. At present, there are about 190 species distributed in tropical and subtropical waters, while 19 species are found in Hong Kong waters around Tai Peng Wan and Ninepin Island. Baby shells are active and feed at night, mainly on coral polyps, sponges and other microscopic marine organisms. In ancient times, baby shells were a kind of currency in circulation. Taro shells are spotted, patterned or patterned with brilliant colors. The pattern secreted by its outer coat membrane is rich in color and adds character to the shell's beautiful shape. The body of the snail is inverted biconical or ovoid, extremely solid, the snail ...... >>
Question 3: What are the types of shellfish There are more types of shellfish: for example, conch, sea snail snail, frog snail, pearl oyster, Xiufeng clam and so on.
1. Shells, referring to the shells of mollusks in general. With a special glandular cells, its secretion can form a calcified material to protect the soft parts of the body, called the shell.
2. Shells are divided into five outlines: gastropods (with the snail snail snail), gastropods (parrot boat octopus), multi-paneled, pouting pedipalps (like ivory), bivalve (two shells).
3. Pearls are a kind of ancient organic gemstone, produced in the nacreous shellfish and mother-of-pearl mollusks, due to the endocrine action of the calcium carbonate-containing minerals (aragonite) beads, by a large number of tiny aragonite crystals *** and become.
Question 4: What are the types of shells shells what varieties are good Types of seafood 1. Fish (live) yellow croaker ya chip fish smallmouth fish turbot sea blackfish Mr. fish Miss fish sea eel sea catfish sea lure fish sea rabbit fish boss fish leather maker fish slime fish American red elephant mussels live large abalone live small abalone live sea cucumbers live sea intestines live snappers 2. Fish (chilled) sandfish big raven's croaker big sea eel big lure sub salmon smallmouth fish stickleback fish boss fish Fish yellow croaker Ankang fish Batfish Gaji fish Sea pumpernickel Octopus sardine red head fish big head fish Chang fish pointed fish swordfish Mr. fish Noodle fish Black fish Throwing barracuda Pike pangasius red knife fish River knife fish Mixed fish Guihua fish Big head treasure Jiubui fish fat head fish Dish fish head tuna octopus Island fish Tongliao fish octopus Wulin 3. Shellfish (live) Xiayi shellfish red Riluo red scallops Tamarix king big conch Small seafood Korean snail Wulbao snail Bird shells Belly button snail Swan egg Mango shell White cloud shell Butterfly shell Wildflower shell Miss shell Tiger shell Red dragon shell Longan shell Glass shell Hairy fresh shell Hemp clam Sea oyster shell Red shell Arctic shell Elephant shell Sea red Hairy sea red Small tamarisk Pencil tamarisk Small seafood Little man's fresh horseshoe shell Black cow's eye Clam scallop Red sea shell Small sea conch Conch fragrant conch Spicy conch Spicy conch Pointy conch Pied conch Sea rabbit Flowering conch Steel conch Green mussel White corbicula Sea screw Snail snail Fresh seaweed Longjing beet Deer's-foot vegetable Liverwort Kelp thread Kelp slice Sea fungus Shrimps Lobsters Lobster shrimp, prawns, skin shrimp, green shrimp, sea shrimp, bamboo shrimp, peach blossom shrimp, small river shrimp, small red shrimp Meat (chilled) Bird and shellfish, clam meat, oyster meat, scallop meat, sandy meat, eel meat, sea intestines, corbiculae, fish whisker, fish maw, mackerel roe, swordfish roe, fish brain, stinging fish, stinging head, stinging fish, sandy fish maw, Mr. Fish, tamarisk, tamarisk mouth, kung fu dish 6. Chilled (Shui Fa), Shui Fa, ginseng, shrimp, dog's whisks, fish tendon, fish intestines Fish white Fish maw Sand fish skin Ling fish skin Sand fish throat Silkworm pupa Male silkworm goose brain Red fish roe Simmer
Question 5: How much do you know about the types of shells Natural shells are seawater shells, freshwater shells, there are also yellow disc shells, cowry shells, freshwater cotton shells, cowry shells, hemp shells, and so on, shells can be used as jewelry, but also used as a daily living supplies.
Types of shells: tiger shells, white jade shells, luminous shells, five-clawed snails, pig mother snails, pearl shells, chaste snails, Tangkuan snails, seven-horned shells, pig's ear shells, horseshoe snails, big horned snails, treasure snails, phoenix snails, sea snails, cap snails, sea snail snails, Tangkuan snails, jade snails, boat octopus, quail snails, frogsnails, popping snails, nephridium snails, cereal snails, pseudo nephridium snails, French snails, cargo shells, crown snails, pectinate spiny conchs, red snails, bivalves mollusks, radiant cherry clam, red abalone snail, chicken heart clam, scale giant clam, chrysanthemum partial clam, daylight cherry clam, Pacific fox clam, angel's wing seagull clam, Xiufeng clam, oil painting sea fan clam, pure color sea daisy clam, saffron bao snail, yellow bao snail, Lamarck's bao snail, and so on. What species of shell is good depends on who is judging a shell, and neighboring species exactly how much difference can be judged as an independent new species has never been a standard, therefore, exactly how many species of mollusks is also not a fixed number. Of course, although the strict biological classification is not conclusive, estimates of the total number of distinct molluscan species are available, and the average university textbook recognizes between 50,000 and 200,000 species of mollusks. Different taxonomic criteria are used to arrive at different specific numbers.
Question 6: How many species of shellfish around the world ● There are 120,000 species of shellfish around the world, which is the second largest group of organisms in nature after insects ● More than 2,000 species of shellfish live in the South China Sea, Hainan's sea culture adds rich colors ● Only from the dinner table to understand the shellfish, it is far from being enough When I first arrived in Hainan, the most commonly eaten a kind of fragrant and fresh watermelon sea snail soup. After staying on the island for a long time, I realized that this soup is known as the first soup in Hainan. Accumulated food fire, fatigue and labor, then cook a pot of such soup, eat immediately feel much more comfortable. Many people are from the table to start recognizing this marine life - shellfish. However, only from the table to recognize shellfish, not too shallow. Shellfish are an extremely valuable resource given to mankind by nature. The world's shellfish about 120,000 species, rivers, streams, lakes, oceans, everywhere there are traces of shellfish, it is the natural world creatures in the second largest group after insects. That peculiar and incomparable shape, pleasing colors, wonderful and exquisite pattern, showing the gift of nature's ingenious workmanship, let a person breathtaking. In the long history of the long river, shellfish are not with its unique charm reflects the evolution of human society and process. Types of shellfish The world's shellfish can be roughly divided into terrestrial and aquatic two kinds, of which the aquatic marine shellfish accounted for more than 80% of the total. Marine shellfish are essentially mollusks, characterized by a soft, non-segmented body, consisting of a head, feet, visceral sacs, coat membrane and shell five parts. According to its shell shape and structure, shellfish can be divided into five categories. Gastropods: including snails, conchs and corn snails, etc., the shape of a spiral twist; bivalve: clams, oysters and scallops, etc., they generally have two shells composed of petal-like; cephalopods: including squid, nautilus and octopus, etc.; multi-plate class: this type of shells up to 8 shell plate, forming a picture of the peculiar shape; digging foot class: the top of the shell forward, the membrane surface is curved, a shallow cap. 5 types of categories of shell, gastropods, Bivalves are the most numerous, accounting for more than 80-90% of the total number of existing shellfish. The structure of the shell Typical shells have three layers of structure, the outer layer for the textured layer, known as chitin, is a hard protein; the middle layer is thicker called prismatic layer or shell layer; the inner layer of the leaf-shaped aragonite structure, very rich in color, known as the pearl layer. The outer and middle layers are secreted by the dorsal edge of the outer membrane, while the inner layer is secreted by the entire surface of the outer coat. Some shells do not have these three layers, such as mother-of-pearl shells and squid. The main component of shells is calcium carbonate, which accounts for 95% of the total components, while other components include magnesium, iron, calcium phosphate, calcium sulfate, silicate and other inorganic substances, as well as a small amount of organic substances such as chitin. Shellfish in the Chinese language, shellfish have a variety of names, usually the most used is the shell, conch, oysters, clams, etc.; there are also called the stone turtle, abalone, giant clams, octopus, cuttlefish, sea cows, mussels, snails, slugs, bugs, arkshells, razor clams, squid, snail, and so on, so it can be said that a variety of different things. Shellfish, in terms of shape, up to more than 100,000 kinds, some like a hat or hat, some were gyroscopic, cone-shaped, pagoda-shaped, and some like a disk or sphere. Different shapes of shellfish, the size also varies greatly, rainbow chrysalis snail small to the body only 0.03 mm long, giant clams the largest shell up to 1.8 meters long, weighing up to 500 pounds or so. Shellfish color includes almost all of the natural color, its pattern is a hundred different, amazing. Shellfish in Hainan has a wide variety of vast marine environment of Hainan Island, excellent water quality, stable salinity, water temperature is moderate, for all kinds of mollusks habitat and reproduction provides good living conditions, the formation of Hainan's unique species of rich shellfish resources. According to incomplete statistics, Hainan waters marine shellfish nearly two thousand species, some species are unique. Which can be eaten abalone, horseshoe snails, mussels, arkshells, arkshells, mother-of-pearl, scallops, sun and moon shells, clams and other species. For medicinal purposes, there are abalone shells, salamander operculum (known as mica stone in traditional Chinese medicine), cone snail shells and meat, baby shells, red snail shells and its operculum and meat, lychee snail shells, ark shells, mussel shells, oyster shells, clam shells and meat. Growing in the Hainan waters of the pearl shell, is one of the valuable shellfish, the production of seawater pearls of the main pearl shells have Ma's mother-of-pearl, mother-of-pearl (commonly known as the black butterfly shell), mother-of-pearl (commonly known as the white butterfly shell) and so on. One of the mother-of-pearl is the largest species, shell length of more than 30 centimeters, the shell solid and heavy, gray and yellow-brown radial ribs on the surface of the shell, the shell has a thick layer of silver-white pearls, often inhabiting the depth of about 20 meters in the sea area, is endemic to the varieties of Hainan Island. Available for the production of decorations, handicrafts shellfish carving ornamental pearl shells and shells, glow-in-the-dark snail shells, nautilus snail, tiger spotted baby, conch, crown snail, hedge phoenix snail, ...... >>
Question 7: How many kinds of shells in the world ****? There are about 110,000 species of shells in the world, of which about 30,000 species live on land, 50,000 species live in freshwater such as gullies, mountains and rivers, lakes, etc., and the rest live in the ocean. According to the arrangement of the five outline of mollusks, shells can be divided into gastropods, bivalves, digging foot, multi-plate and cephalopods
Question 8: What are the types of shells in China About 120,000 species of rivers, streams, lakes, oceans, and everywhere there are traces of shellfish, which is the natural world of living creatures, second only to the insects of the second largest class. The peculiar shape, pleasing colors, wonderful and exquisite patterns, showing the gift of nature's ingenious work, let a person marvel.
Hainan's shellfish Hainan Island has a wide variety of vast marine environment, excellent water quality, stable salinity, moderate water temperature, for all kinds of mollusks habitat and reproduction provides good living conditions, the formation of Hainan's unique species of rich shellfish resources. According to incomplete statistics, Hainan waters marine shellfish nearly two thousand species, some species are unique. Which can be eaten abalone, horseshoe snails, mussels, arkshells, arkshells, mother-of-pearl, scallops, sun and moon shells, clams and other species. For medicinal purposes, there are abalone shells, salamander operculum (known as mica stone in traditional Chinese medicine), cone snail shells and meat, baby shells, red snail shells and its operculum and meat, lychee snail shells, ark shells, mussel shells, oyster shells, clam shells and meat. Growing in the Hainan waters of the pearl shell, is one of the valuable shellfish, the production of seawater pearls of the main pearl shells have Ma's mother-of-pearl, mother-of-pearl (commonly known as the black butterfly shell), mother-of-pearl (commonly known as the white butterfly shell) and so on. One of the mother-of-pearl shell is the largest species, shell length of more than 30 centimeters, shell solid and heavy, gray and yellow-brown radial ribs on the shell surface, the shell has a thick layer of silvery-white pearls, often inhabiting the depth of about 20 meters in the sea area, is endemic to the varieties of Hainan Island. Available for the production of decorations, handicrafts shellfish carving ornamental pearl shells and shells, glow-in-the-dark snail shells, nautilus snails, tiger babies, French snails, crown snails, hedge phoenix snails, spotted phoenix snails, taro screws and other kinds of
Problem nine: how many kinds of shell ornaments I think you are talking about here is the exoskeleton (shells) mollusks, right. About biological classification, if stay in the level of popular science, you will feel that it is a very rigorous and orderly system. The kingdom, phylum, order, family, genus and species, each organism can find its own unique position ......, the actual situation is that if you enter the level of biological classification, you will find that it is a very difficult to make sense of the chaotic world. It's not even clear how many species there are, or how many phyla there are. In the beginning, Linnaeus categorized organisms into the animal kingdom and the plant kingdom based on whether or not they moved on their own, and this is still the case in popular science books, but nowadays, university biology textbooks hardly ever categorize organisms in this way. Nowadays, different universities use different textbooks, so they adopt different classification systems, there are three kingdoms, there are four kingdoms, there are five kingdoms, and there are six kingdoms. There is no definition of the kingdom, and even less of the phyla and genera underneath. How many species of mollusks are there? It depends on who is counting, or who is judging. There is no standard for how different a shell is from its neighbors to be considered a separate species, so the number of species of mollusks is also uncertain. Of course, although the strict biological classification is not conclusive, estimates of the total number of distinct molluscan species are available, and general university textbooks suggest that there are between 50,000 and 200,000 species of molluscs. Specific numbers vary depending on the classification criteria used
Question 10: How many types of shells are there? The number, shape and structure of shells are extremely variable. Some species have a spiral shell (e.g., snails, snails, abalones); some have two petal-like shells (e.g., mussels, arkshells); some have eight plate-like shells arranged in an imbricate pattern (e.g., rock turtles); some have a piece of shell encapsulated in the body (e.g., squid, gunniped squid); and some have a completely degraded shell (e.g., boat maggots). The main components of the shell are 95% calcium carbonate and a small amount of chitin. Generally can be divided into three layers, the outermost layer for the black-brown cuticle (shell skin), thin and transparent, has the role of preventing carbonate erosion, by the edge of the outer coat membrane secretion of the chitin composition; the middle layer for the prismatic layer (shell layer), thicker, by the edge of the outer coat membrane secretion of the prismatic calcite composition, the outer layer and the middle layer can be expanded the shell's area, but does not increase the thickness; the inner layer for the pearl layer (the bottom layer), the outer coat membrane secreted by the whole surface of the blade-like aragonite (aragonite), the inner layer of the shell is the pearl layer (bottom layer), by the whole surface secretion The inner layer is the nacreous layer (bottom layer), which is made up of bladed aragonite (aragonite) stacked on top of each other, has a beautiful luster, and can be thickened as the body grows. The main chemical composition of both calcite and aragonite is CaCO3.