What class is Lepidodermella?
What class is Lepidodermella?
Lepidodermella squamata is a freshwater species of minute worm in the phylum Gastrotricha….
| Lepidodermella squamata | |
|---|---|
| Kingdom: | Animalia |
| Phylum: | Gastrotricha |
| Order: | Chaetonotida |
| Family: | Chaetonotidae |
What are the general characteristics of Gastrotricha?
Characteristics of Gastrotricha: Body contains no internal cavity. Body possesses a through gut with a subterminal anus. Body covered in a cuticle bearing numerous scales, spines or hooks. Has a nervous system with ganglia.
Are gastrotrichs protists?
Freshwater gastrotrichs live on submerged or floating plants, drift in open water, or live between grains of sand. Gastrotrichs eat algae, other protists, and bacteria. Protists (PROH-tists) are one-celled living things that have a nucleus (NOO-klee-uhs), which is the control center of a cell.
Are Gastrotricha invertebrates?
gastrotrich, any of about 500 species of the phylum Gastrotricha, a group of microscopic aquatic invertebrates that live in the spaces between sand grains and soil particles and on the outer coverings of aquatic plants and animals. They occur in salt water and freshwater and also on sandy seashores.
What is the meaning of Gastrotricha?
Definition of gastrotrich : any of a phylum (Gastrotricha) of minute aquatic pseudocoelomate animals that usually have a spiny or scaly cuticle and cilia on the ventral surface.
What do Gastrotricha feed on?
detritus
They have adhesive glands with which they can anchor themselves to the substrate and cilia with which they move around. They feed on detritus, sucking up organic particles with their muscular pharynx. They are hermaphrodites, the marine species producing eggs which develop directly into miniature adults.
Where are Gastrotricha found?
Abstract. Gastrotrichs are among the smallest of invertebrates and are common and widespread in inland waters around the world. Most species live on sediments and among plants, although a few semiplanktonic species occur in tropical waters.
Is Gastrotricha an Acoelomate?
Gastrotricha is a phylum of microscopic, free-living, aquatic worms, characterized by bilateral symmetry and an acoelomate body plan. These animals, which are mostly less than 3 millimeters in length, are found in both freshwater and marine ecosystems. They often have very high population densities.
How do Gastrotrichs reproduce?
Many species of chaetotonid gastrotrichs reproduce entirely by parthenogenesis. In these species, the male portions of the reproductive system are degenerate and non-functional, or, in many cases, entirely absent.
Does Gastrotricha have digestion?
Digestive System: Complete food tube with mouth (muscular pharynx) and anus. Circulatory System: Blood vessel system in parenchymal mesoderm. Locomotion: Ciliated epithelium and muscular contractions.
How does a Gastrotricha reproduce?
At least one species of gastrotrich, Urodasys viviparus, is viviparous. Many species of chaetotonid gastrotrichs reproduce entirely by parthenogenesis. In these species, the male portions of the reproductive system are degenerate and non-functional, or, in many cases, entirely absent.
Are nematodes acoelomates?
The flatworms are acoelomate organisms that include free-living and parasitic forms. The nematodes, or roundworms, possess a pseudocoelom and consist of both free-living and parasitic forms. The nematodes and the arthropods belong to a clade with a common ancestor, called Ecdysozoa.
