Animalscaretips
All mollusks are protostomes, so bivalves, which are mollusks, are also protostomes. The differences between protostomes and deuterostomes occurs...
- Are clams deuterostomes or protostomes?
- Are clams digestive tract complete or incomplete?
- What kind of sensory structures do bivalves have?
- Are chordates protostomes or deuterostomes?
- What organisms are protostomes?
- Why are clams considered bivalves?
- Why are clams called bivalves?
- Why are clams called bivalves quizlet?
- What type of reproduction do molluscs have?
- What are characteristics of bivalves?
- Do molluscs have tissue?
- Is phylum Cnidaria Protostome or Deuterostome?
- Are molluscs deuterostomes?
- Which animal is not a protostome?
- Are all protostomes classified in one phylum?
Are clams deuterostomes or protostomes?
Animals in the phylum Mollusca include clams, snails, octopuses, and sea slugs (pictured right). They are all protostome coelomates.
Are clams digestive tract complete or incomplete?
Clams (and all mollusks) have a complete digestive system. It consists of a mouth where food is ingested, a short connecting tube called the esophogus, a stomach which temporarily holds food, and an intestine where food digestion and absorption takes place.
What kind of sensory structures do bivalves have?
The sensory organs of bivalves are not well developed and are largely located on the posterior mantle margins. The organs are usually mechanoreceptors or chemoreceptors, in some cases located on short tentacles. The chemoreceptor cells taste the water and are sensitive to touch.
Are chordates protostomes or deuterostomes?
The majority of animals more complex than jellyfish and other Cnidarians are split into two groups, the protostomes and deuterostomes. Chordates (which include all the vertebrates) are deuterostomes.
What organisms are protostomes?
Protostomia, group of animals—including the arthropods (e.g., insects, crabs), mollusks (clams, snails), annelid worms, and some other groups—classified together largely on the basis of embryological development.
Why are clams considered bivalves?
Bivalve mollusks (e.g., clams, oysters, mussels, scallops) have an external covering that is a two-part hinged shell that contains a soft-bodied invertebrate. ... Like fish, bivalve mollusks breathe through their gills. As filter feeders, bivalves gather food through their gills.
Why are clams called bivalves?
Clams and their relatives (oysters, scallops, and mussels) are often called bivalves (or bivalved mollusks) because their shell is composed of two parts called valves. Bivalves have a long history.
Why are clams called bivalves quizlet?
Give the kingdom, phylum, and class for the clam. Describe the body of bivalves. ... They are called bivalves because their shell is composed of two parts that are called valves.
What type of reproduction do molluscs have?
Mollusks reproduce sexually, and most species have separate sexes. Sexual reproduction is achieved by the formation and fusion of gametes: sperm and eggs. Some species are hermaphrodites meaning that individuals are capable of forming both sperm and eggs.
What are characteristics of bivalves?
The bivalves are bilaterally symmetrical mollusks, enclosing the soft internal body. Common feeding characteristics of bivalves include filtering out particle food through an enlarged pair of gills known as ctenidia. Most bivalves are sedentary, but some use their foot to glide across substrate.
Do molluscs have tissue?
Mollusks have a hard outer shell. There is a layer of tissue called the mantle between the shell and the body. Most mollusks have tentacles for feeding and sensing, and many have a muscular foot. Mollusks also have a coelom, a complete digestive system, and specialized organs for excretion.
Is phylum Cnidaria Protostome or Deuterostome?
Cnidaria are neither protostomes or deuterostome, as both of these superphylum belong to the Bilateria clade of animals, animals that exhibit...
Are molluscs deuterostomes?
Molluscans are protostomes.
Their mouth arise from the embryonic blastopore. ... The blastopore becomes mouth in protostomes (i.e. mouth appeared first) while in deuterostomes it forms anus (i.e. mouth appears later). Please read this answer as well.
Which animal is not a protostome?
Flatworms (or platyhelminths) are a variety of invertebrate acoelomates (no body cavity) falling into the protostome clade.
Are all protostomes classified in one phylum?
All protostomes are classified in one phylum. allows the offspring to populate new areas. ... Cnidarian offspring drifting away from their parents provides no genetic benefit to the species that practice this method of parenting.
