Which of the following has a Pseudocoelom?
Nematodes or roundworms (see Nematoda), rotifers (see Rotifera), acanthocephalans (spiny-headed worms), kinorhynchs (see Kinorhyncha) and nematomorphs or horsehair worms (see Nematomorpha) are pseudocoelomates.
Are echinoderms Diploblastic or Triploblastic?
Cnidarians and Ctenophores are primary examples of Diploblastic animals whereas molluscs, worms, echinoderms and arthropods are Triploblastic.
Which group has a Pseudocoelom?
The animals which have pseudocoelom are Rotifers, Nematodes and Roundworms.
What is Pseudocoelomata?
: a group comprising lower invertebrates in which there is a body cavity that either lacks a mesodermal lining or has one derived from wandering mesenchymal cells, including rotifers, nematodes, bryozoans, and related forms, and being basically equivalent to Aschelminthes.
Are jellyfish Pseudocoelom?
Hookworm is Ancylostoma, it is an Aschelminthes animal and is pseudocoelomate as their body cavity is Pseudocoelom (fluid filled body cavity present in between the mesoderm and ectoderm). Jellyfish is a Coelenterate animal and is acoelomate.
Are jellyfish Diploblastic?
All the more complex animals (from flat worms to humans) are triploblastic with three germ layers (a mesoderm as well as ectoderm and endoderm). Groups of diploblastic animals alive today include jellyfish, corals, sea anemones and comb jellies.
Do radiate animals have a Pseudocoelom?
Radiate animals have tissues, but they lack organ systems.
Do platyhelminthes have a true Coelom?
Platyhelminthes are a phylum of worms that are flat in shape, the majority of which are parasitic in nature. Their flat shape comes from the fact that they are acoelomates (having no coelom, or fluid-filled body cavity).
What are the 11 Phylums?
A Brief List Of 21 Animal Phyla
- Phylum Porifera (Sponges)
- Phylum Coelenterata (Cnidaria) Corals & Jellyfish.
- Phylum Ctenophora (Comb Jellies)
- Phylum Platyhelminthes (Flatworms)
- Phylum Nemertea (Ribbon Worms)
- Phylum Rotifera (Rotifers)
- Phylum Gastrotricha (Gastrotrichs)
- Phylum Nematomorpha (Horsehair Worms)
Do leeches have a complete digestive system?
Leeches breathe through the skin. The digestive system contains a crop, or pouch, in which food can be stored for several months. One to four pairs of eyes are located at the anterior end.
Do leeches have a skeleton?
Annelids include earthworms, leeches, and marine polychaete worms. Their body structure gives them support, even without a bony skeleton.