Are flatworms more complex than sponges?
Are flatworms more complex than sponges?
2. The flatworms, like the sponges (Phylum Porifera) and Phylum Cnidaria (Hydra, jellyfish, corals, and sea anemones) are multicellular. However, the flatworms are more complex in structure than either of the two other groups.
What is the difference between sponges and cnidarians?
Sponges vs Cnidarians One interesting difference between sponges and cnidarians is that sponges lack tissue while cnidarians have tissues but not the organ systems. Sponges and Cnidarians are very primitive acoelomic invertebrates with very simple body structures. Both organisms are found in aquatic ecosystems.
Do flatworms have true tissues?
Yes, members of the phylum Platyhelminthes have true tissues. Tissues are groups of cells that have the same function, similar in structure and also…
Do sponges have tentacles?
Sponges have specialized cells and an endoskeleton. They lack tissues and body symmetry. They have tissues and radial symmetry. They also have tentacles with stingers.
How are flatworms and roundworms the same?
Neither flatworms nor roundworms have these. So these three phyla are as different as they are similar. They can all be called worms because of their similar body plans but beneath these superficial similarities lie fundamental differences that have led to taxonomists putting them in separate phyla.
What kind of worms have the same shape?
In fact there are many different types of worms and sometimes the only thing they have in common is that vermiform shape. This is particularly true of platyhelminthes (flatworms), nematodes (round worms) and annelids (segmented worms). Let’s begin with the most primitive group, the flatworms.
What’s the difference between a worm and a nematode?
A worm is a worm is a worm. Or maybe not. In fact there are many different types of worms and sometimes the only thing they have in common is that vermiform shape. This is particularly true of platyhelminthes (flatworms), nematodes (round worms) and annelids (segmented worms). Let’s begin with the most primitive group, the flatworms.
What kind of environment does a flatworm live in?
They digest the food after ingestion and absorb the contents through the single layered endodermal cells of gut into the body fluid. Flatworms generally prefer to live around moist environments or inside other animals bodies as parasites. Nematodes, the members of the Phylum: Nematoda, are also known as Round worms.