Earthworm annelida snail

Introduction to the Annelida Introduction to the Annelida Everybody's favorite, worms. . . Segmented worms make up the Phylum Annelida. The phylum includes earthworms and their relatives, leeches, and a large number of mostly marine worms known as polychaetes. Various species of polychaete are known as lugworms, clam worms, bristleworms, fire worms, sea mice, and "EWWW! I stepped on that THING!" Annelids can be told by their segmented bodies. Polychaetes (meaning "many bristles") have, predictably, many bristles on the body, while earthworms and leeches have fewer bristles. There are about 9000 species of annelid known today. Click on the buttons below to learn more about the Annelida. An Serious annelid connoisseurs should not miss the

\( \newcommand\) • • • • • • • • • The mollusks are a diverse group (85,000 described species) of mostly marine species. They have a variety of forms, ranging from large predatory squid and octopus, some of which show a high degree of intelligence, to small grazing forms with elaborately sculpted and colored shells. The annelids traditionally include the oligochaetes, which include the earthworms and leeches, the polychaetes, which are a marine group, and two other smaller classes. The phyla Mollusca and Annelida belong to a clade called the Lophotrochozoa, which also includes the phylum Nemertea, or ribbon worms ( Phylum Mollusca Mollusca is the predominant phylum in marine environments, where it is estimated that 23 percent of all known marine species belong to this phylum. It is the second most diverse phylum of animals with over 75,000 described species. The name “mollusca” signifies a soft body, as the earliest descriptions of mollusks came from observations of unshelled, soft-bodied cuttlefish (squid relatives). Although mollusk body forms vary, they share key characteristics, such as a ventral, muscular foot that is typically used for locomotion; the visceral mass, which contains most of the internal organs of the animal; and a dorsal mantle, which is a flap of tissue over the visceral mass that creates a space called the mantle cavity. The mantle may or may not secrete a shell of calcium carbonate. In addition, many mollusks have a scraping structure at the mouth,...

Abstract Have you ever wondered how many different types of animals live around your home, like in your backyard or a local park? Animals come in all shapes and sizes, each a small part of the amazing diversity of life. These differences can also help us to classify animals into different groups. One way people classify animals is by their phylum. Do you know which phylum you belong to? In this science project, you will investigate the diversity of the animal life around your home and try to figure out which phylum most of the animals belong to. Introduction From the largest elephant to the tiniest water flea, all animals on the planet have unique characteristics. Taxonomy is the area of science that uses these unique characteristics to put animals into certain groups. You may already know of some of the groups. For example, have you ever heard the term "the animal kingdom"? A " kingdom" is actually a scientific rank used in taxonomy, and all of the animals belong to the kingdom called Animalia. Within the kingdom Animalia, all animals are put into smaller groups based on their similarities and differences. The taxonomic rank for these groups is called phylum (the plural of phylum is "phyla"). There are perhaps as many as 35 different animal phyla, but most phyla are very uncommon. Scientists recognize eight major phyla to describe most common animals: • Porifera: Commonly called sponges, these animals live underwater and siphon water through a series of pores to trap food...

Earthworm Physical Characteristics • Brown • Grey • Red • White • Pink Skin up to eight years 0.0088 ounces to 1.5 pounds 0.0088 ounces to 1.5 pounds Size (L): 0.039 inches to nearly 10 feet two to three months This post may contain affiliate links to our partners like Chewy, Amazon, and others. Purchasing through these helps us further the A-Z Animals mission to educate about the world's species. Only The Top 1% Can Ace our Animal Quizzes Think You Can? Take Our Brand New A-Z-Animals Earthworm Quiz Other earthworms might not live in the soil, but they help break down materials that go into manure and compost. They’re also good 3 Incredible Facts! Here are some facts about this essential • Earthworms writhe when people pick them up because the pressure causes their muscles to contract, and the very salt in the person’s skin is toxic to them. • The longest ever found was a member of the Amynthas mekongianus species. This 10-foot long worm was found on the muddy banks of southeast • There are about 180 species of earthworm in the You can check out more • • • • • • • • • • See all of our Classification and History There are about 7,000 species of earthworms, but only 150 are common worldwide. ©Maryna Pleshkun/Shutterstock.com Because there are so many species of earthworms, there are many genus and species names. All, however, belong to the phylum Annelida, which means “little rings” in Latin, to the Class Clitellata, and to the Order Opisthopora. There is some dispute about ...

More • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Earthworm: Morphology And Anatomy An earthworm is a segmented worm; a terrestrial invertebrate belonging to the phylum Annelida. They are the common inhabitants of moist soil and feed on organic matter. Earthworms are commonly called as farmer’s friend. This is because the worm casting (faecal deposit) increases the fertility and burrowing helps in proper aeration of the soil. The earthworms found in India are Pheretima and Lumbricus. The morphology and anatomy of the earthworm are discussed below. Earthworm Diagram The diagram given below represents the morphological features of an earthworm. Morphology of Earthworm Earthworms have a tube-like arrangement or cylindrical shaped and reddish-brown segmented body. The body is divided into small segments. The dor...

Family of gastropods Vermetidae A live individual of Kingdom: Phylum: Class: Subclass: Order: Superfamily: Family: Genera See text The Vermetidae, the worm snails or worm shells, are a These snails usually grow cemented onto a hard surface, or cemented together in colonies. Shell description [ ] These snails do not have typical regularly coiled Some vermetids are solitary, whereas others live in colonies, partially cemented together. The shells of species within this family vary greatly and can sometimes be extremely challenging to identify. Comparison with annelid worm tubes [ ] The empty calcareous tubes of certain marine vice versa. The difference is that vermetid shells are shiny inside and have three shell layers, whereas the annelid worm tubes are dull inside and have only two shell layers. Taxonomy [ ] Vermetus sp.; Nicosia Formation; Pliocene; Cyprus 2005 taxonomy [ ] The Vermetidae were recognized as the only family in the superfamily The following two Family Vermetidae Rafinesque, 1815 • Subfamily Vermetinae Rafinesque, 1815 • Subfamily Dendropomatinae Bandel & Kowalke, 1997 This classification of the Vermetoidea has been somewhat controversial. Studies, based on sperm ultrastructure, Campanile and Thylacodes form a clade that is 2006 taxonomy [ ] Bandel (2006) • Subfamily Vermetinae Rafinesque, 1815 • Subfamily † Laxispirinae Bandel, 2006 • Subfamily Dendropomatinae Bandel & Kowalke, 1997 Genera [ ] Genera within the family Vermetidae include: Vermetinae • • † L...

Introduction to Worms Most people are familiar with earthworms found in garden soil. Although many different kinds of animals are commonly lumped together as “worms,” there are several distinct phyla that fit the category. Worms are typically long, thin creatures that get around efficiently without legs. The different phyla of worms display a great range in size, complexity, and body structure. Flatworms (phylum Platyhelminthes) are simple animals that are slightly more complex than a cnidarian. Roundworms (phylum Nematoda) have a slightly more complex body plan. Segmented worms (phylum Annelida) are the most complex animals with worm-like body plans. A study of worms can illuminate a possible history of how some organ systems and body features evolved. Image courtesy of Uwe Kils, Worms are invertebrate animals with bilateral symmetry. Worms have a definite anterior (head) end and a posterior (tail) end. The ventral surface of worms and other organisms is the bottom side of the body, often closest to the ground. The dorsal surface is located on the upper part of the body facing the sky. The lateral surfaces are found on the left and right sides of the body. Figure 3.35 compares bilateral symmetry in a whale shark and a swimming plychaete worm. Organs for sensing light, touch, and smell are concentrated in the heads of worms. They can detect the kinds of environment they encounter by moving in the anterior direction. There are six features and systems that reveal an evolvin...

More • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Earthworm: Morphology And Anatomy An earthworm is a segmented worm; a terrestrial invertebrate belonging to the phylum Annelida. They are the common inhabitants of moist soil and feed on organic matter. Earthworms are commonly called as farmer’s friend. This is because the worm casting (faecal deposit) increases the fertility and burrowing helps in proper aeration of the soil. The earthworms found in India are Pheretima and Lumbricus. The morphology and anatomy of the earthworm are discussed below. Earthworm Diagram The diagram given below represents the morphological features of an earthworm. Morphology of Earthworm Earthworms have a tube-like arrangement or cylindrical shaped and reddish-brown segmented body. The body is divided into small segments. The dor...

Introduction to the Annelida Introduction to the Annelida Everybody's favorite, worms. . . Segmented worms make up the Phylum Annelida. The phylum includes earthworms and their relatives, leeches, and a large number of mostly marine worms known as polychaetes. Various species of polychaete are known as lugworms, clam worms, bristleworms, fire worms, sea mice, and "EWWW! I stepped on that THING!" Annelids can be told by their segmented bodies. Polychaetes (meaning "many bristles") have, predictably, many bristles on the body, while earthworms and leeches have fewer bristles. There are about 9000 species of annelid known today. Click on the buttons below to learn more about the Annelida. An Serious annelid connoisseurs should not miss the

Family of gastropods Vermetidae A live individual of Kingdom: Phylum: Class: Subclass: Order: Superfamily: Family: Genera See text The Vermetidae, the worm snails or worm shells, are a These snails usually grow cemented onto a hard surface, or cemented together in colonies. Shell description [ ] These snails do not have typical regularly coiled Some vermetids are solitary, whereas others live in colonies, partially cemented together. The shells of species within this family vary greatly and can sometimes be extremely challenging to identify. Comparison with annelid worm tubes [ ] The empty calcareous tubes of certain marine vice versa. The difference is that vermetid shells are shiny inside and have three shell layers, whereas the annelid worm tubes are dull inside and have only two shell layers. Taxonomy [ ] Vermetus sp.; Nicosia Formation; Pliocene; Cyprus 2005 taxonomy [ ] The Vermetidae were recognized as the only family in the superfamily The following two Family Vermetidae Rafinesque, 1815 • Subfamily Vermetinae Rafinesque, 1815 • Subfamily Dendropomatinae Bandel & Kowalke, 1997 This classification of the Vermetoidea has been somewhat controversial. Studies, based on sperm ultrastructure, Campanile and Thylacodes form a clade that is 2006 taxonomy [ ] Bandel (2006) • Subfamily Vermetinae Rafinesque, 1815 • Subfamily † Laxispirinae Bandel, 2006 • Subfamily Dendropomatinae Bandel & Kowalke, 1997 Genera [ ] Genera within the family Vermetidae include: Vermetinae • • † L...