Please use the following information to answer the question below. The most recently discovered phylum in the animal kingdom (1995) is the phylum Cycliophora. It includes three species of tiny organisms that live in large numbers on the outsides of the mouthparts and appendages of lobsters. When in the feeding stage, a cycliophoran permanently attaches to the lobster via an adhesive disk and collects scraps of food from its host's feeding by capturing the scraps in a current created by a ring of cilia. Its body is sac-like and has a U-shaped intestine that brings the anus close to the mouth. Cycliophorans are eucoelomate (have a body cavity that is a coelom) and do not molt (though their host does). Cycliophorans have two types of larvae. One type of larva is produced when the digestive system of a female is impregnated by a male. The digestive system then collapses and develops into a larva, which swims away in search of a new host after the surrounding female dies. Which is the embryonic tissue that is apparently most important in forming this type of larva? ? mesoderm ? mantle ? ectoderm ? endoderm
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The Cycliophora is a new taxonomic group of animals that was first discovered in the 1990s. There are just three members of this phylum, all of which are found on lobsters, typically on the outside of the body affixed to the mouthparts or appendages. They affix themselves permanently to the lobster with a sticky disc. They then use a ring of cilia to create currents in the water that allow them to gather small bits of food as the lobster feeds. Other characteristics of the Cycliophora include: 1) a sac-like body; 2) a U-shaped intestine that results in the mouth and anus being in close proximity; 3) spiral cleavage in embryos; 4) lack of molt; and 5) they are eucoelomates. Lobsters that have large numbers of cycliophorans living on them don't hurt or help lobsters. Therefore, the cycliophorans are: parasites and symbionts mutualists and symbionts commensals and symbionts mutualist and endosymbionts commensals and endosymbionts
Adi S.
The phylum Cycliophora includes tiny organisms that live in large numbers on the outsides of the mouthparts and appendages of lobsters. The feeding stage permanently attaches to the lobster and collects scraps of food from its host's feeding by capturing the scraps in a current created by a ring of cilia. The feeding stage of cycliophorans is best described as ______.
A chitinous cuticle, rings of scalids on the introvert and that two rings of the introvert retract all serve to unite what set of taxa? Syncytial cells occur in trematodes, rotifers, acanthocephalans and some turbellarians as well as in your skeletal muscle. What does this term mean? From new evidence and consideration of the differences among the following four phyla, which of the following is now thought to be the least related not just to the bilateria but to the other three taxa listed below? The presence of which of the following cell types may clearly define the organism possessing it as a member of the Cnidaria? The modern (Darwinian) definition of "homology" applies to feeding structures of Phoronida and the annelid group, Sipuncula. Small freshwater jellies like Craspedacusta sowerbyi, which occurs in Ohio, is a member of this Cnidarian class, the only one including freshwater members?
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