What are the significant differences between leeches and other annelids?

A significant difference between leeches and other annelids is the development of suckers at the anterior and posterior ends and a lack of chaetae. Additionally, the segmentation of the body wall may not correspond to the internal segmentation of the coelomic cavity.

How do the oligochaetes and leeches differ from the polychaetes?

The main difference between polychaetes and oligochaetes is that the polychaetes have a pair of parapodia per body segment that bear many bristles. But, oligochaetes have few bristles on their outer surface of the body but, no parapodia.

What are characteristics of lophotrochozoans?

The lophotrochozoans are triploblastic and possess an embryonic mesoderm sandwiched between the ectoderm and endoderm found in the diploblastic cnidarians. These phyla are also bilaterally symmetrical, meaning that a longitudinal section will divide them into right and left sides that are symmetrical.

What is the main difference between flatworms and annelids worms?

Flatworms (phylum Platyhelminthes) are simple animals that are slightly more complex than a cnidarian. Roundworms (phylum Nematoda) have a slightly more complex body plan. Segmented worms (phylum Annelida) are the most complex animals with worm-like body plans.

What’s the difference between Slug and leech?

Anatomy – Leeches Are Segmented and Slugs Have a Foot The surface of the leech has 102 circular rings; suckers are at both ends of the body. They move in a crawling motion using the sucker at each end. Slugs are gastropod mollusks with two pairs of feelers on their heads.

Do leeches have mouths?

leech, (subclass Hirudinea), any of about 650 species of segmented worms (phylum Annelida) characterized by a small sucker, which contains the mouth, at the anterior end of the body and a large sucker located at the posterior end. All leeches have 34 body segments.

What is the difference between Ecdysozoa and Lophotrochozoa?

What is the difference between Lophotrochozoa and Ecdysozoa? Ecdysozoans have the ability to shed their exoskeleton several times throughout their life span, whereas lophotrochozoan are the animals who possess a trochophore larvae and a feeding structure called lophophore.

Are insects lophotrochozoans?

Thus far we have discussed nonchordate mechanoreceptors in cnidarians, a basal metazoan, and in nematodes and insects, both examples of Ecdysozoa (moulting animals). This leaves the lophotrochozoans.

What are the main differences between roundworms and flatworms?

The main difference between flatworms and roundworms is that flatworms consist of a dorso-ventrally flattened body whereas roundworms consist of a cylindrical body tapered to a fine point at each end. Both roundworms and tapeworms are triploblastic animals with bilateral symmetry.

What are the difference between flatworms and tapeworms?

Planarians and tapeworms are two types of flatworms that belong to phylum Platyhelminthes. Planarians are unsegmented flatworms, which are free living. They belong to class turbellaria. On the other hand, tapeworms are segmented flatworms which are parasitic and live in the intestines of animals.

Is slug a leech?

Leeches and Slugs are similar invertebrates, but differ in their places of dwelling….

Leech Slug
They are Leech is a segmented worm which probably dwells on land and sea. Slug is any gastropod mollusk that lacks a shell, has a reduced shell, or has a small internal shell.