What is the most significant difference between leeches and other classes of annelids?

What is the most significant difference between leeches and other classes of annelids?

Unlike most oligochaetes, leeches have suckers (anterior and posterior) and lack setae (Fig. 11). Another major distinction between these two annelids is their feeding niches.

What is the difference between Leech and Ascaris?

Answer: Leeches are segmented parasitic or predatory worms that belong to the phylum Annelida and comprise the subclass Hirudinea. An ascarid nematode of the phylum Nematoda, it is the most common parasitic worm in humans.

How would the worm movements differ between an earthworm and a leech?

During mating, sperms are exchanged between two worms. They lack respiratory organs so they breathe through their skin….Earthworm:

Leech	Earthworm
They are worm-like creatures with segmented, dorso-ventrally flattened body.	They are worm-like creatures with segmented, tube-like body.

What differentiates polychaetes from other annelids?

Polychaetes differ from other annelids in having a well differentiated head with specialized sense organs and no clitellum. They have many setae, usually arranged in bundles on the parapodia. The head bears eyes, antennae, and sensory palps.

What’s the difference between Slug and leech?

Leeches and Slugs are similar invertebrates, but differ in their places of dwelling. A leech is an Annelid or segmented worm, which lives according to its category, whereas a slug is a Mollusk, which lives and survives wholly on plants. Leeches are worms, belonging to phylum Annelida and subclass Hirudinea.

What characteristics do polychaetes have?

The known species of polychaetes share only a few characteristics. Each has a head, a tail and a segmented body, and typically each body segment has a pair of leg-like parapodia with spiny bristles sticking out. It’s these bristles that give the worms their name: “polychaete” is Greek for “with much hair.”

What are the differences between Ascaris and tapeworm?

Main Difference – Roundworm vs Tapeworm The main difference between roundworms and tapeworm is that roundworm has a cylindrical body tapered to a fine point at each end whereas tapeworm has a dorso-ventrally flattened, tape-like body. Both roundworms and tapeworms are triploblastic animals with bilateral symmetry.

What are the differences between Ascaris and earthworm?

The main difference between Ascaris and earthworm is that Ascaris is a parasitic roundworm that causes illness whereas earthworm is a segmented worm beneficial to the soil. Furthermore, Ascaris belongs to the phylum Nematoda while earthworm belongs to the phylum Annelida.

What is the difference between leeches and polychaetes?

Polychaetes are the most diverse group of annelids and most live in the marine environment. They differ from earthworms and leeches in that they have appendages called parapodia and do not possess a clitellum. In size they range from 1 mm (0.04”) to 3 m (10′) but most are around 10 cm (4”).

What do leeches and oligochaetes have in common?

Leeches are segmented parasitic or predatory worms that comprise the subclass Hirudinea within the phylum Annelida. They are closely related to the oligochaetes, which include the earthworm, and like them have soft, muscular, segmented bodies that can lengthen and contract.

Do leeches drink blood?

Leeches are worms that live in water or on land and feed by sucking blood from fish, frogs, lizards, birds or, if they get the chance, larger animals like humans. They suck blood because it is a very good food source for them. Some leeches only need to feed once a year.

Do leeches hurt?

Leech bites are not dangerous or painful, just annoying. Unlike some other creatures that bite, leeches don’t cause stinging, carry diseases or leave a poisonous stinger in the wound. The bite doesn’t hurt since leeches release an anaesthetic when they bite, but due to the anticoagulant, the wounds bleed a fair bit.