Difference Between Setae and Chaetae

The key difference between setae and chaetae is that setae are bristle-like structures present in both vertebrates and invertebrates, while chaetae are chitinous bristle-like structures present in most fungal species. ... Thus, setae and chaetae are structures that helped in the survival of organisms during evolution.

1. What is the meaning of Chaetae?
2. What is the function of Chaetae in earthworm?
3. What are Parapodia and setae?
4. What is setae in zoology?
5. How do you pronounce Chaetae?
6. What is the difference between Polychaetes and Oligochaetes?
7. Do all annelids have Chaetae?
8. Do earthworms display Cephalization?
9. What is the function of setae?
10. What is the Parapodia used for?
11. Do Polychaetes have setae?

What is the meaning of Chaetae?

A chaeta or cheta (from Greek χαίτη “crest, mane, flowing hair"; plural: chaetae) is a chitinous bristle or seta found in annelid worms, (although the term is also frequently used to describe similar structures in other invertebrates such as arthropods).

What is the function of Chaetae in earthworm?

Chaetae are involved in the locomotion of the worm and this can be illustrated by allowing a worm to move over a piece of rough paper and then a sheet of glass.

What are Parapodia and setae?

In annelids, parapodia are paired, un-jointed lateral outgrowths that bear thechaetae. In several clades of sea snails and sea slugs, 'parapodium' refers to lateral fleshy protrusions. Seta is a biological term derived from the Latin word for "bristle".

What is setae in zoology?

Plural setae (sē′tē) A stiff hair, bristle, or bristlelike process or part on an organism. Setae on the bodies of spiders are used as sensory organs, while setae on the bodies of many polychaete worms, such as earthworms, are used for locomotion.

How do you pronounce Chaetae?

noun, plural chae·tae [kee-tee]. Zoology.

What is the difference between Polychaetes and Oligochaetes?

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. ... Polychaetes and oligochaetes are two subclasses of phylum Annelida.

Do all annelids have Chaetae?

Chitinous hairlike extensions, anchored in the epidermis and projecting from the cuticle, called setae/chaetae are present in every segment. Annelids show the presence of a true coelom, derived from embryonic mesoderm and protostomy.

Do earthworms display Cephalization?

Though not obvious, cephalization does exist in an earthworm. ... Hence, the earthworm exhibits cephalization.

What is the function of setae?

Each segment or section has muscles and bristles called setae. The bristles or setae help anchor and control the worm when moving through soil. The bristles hold a section of the worm firmly into the ground while the other part of the body protrudes forward.

What is the Parapodia used for?

Parapodia are paired, unjointed lateral appendages found in polychaete worms, which are often fleshy (especially in marine polychaetes) and used for locomotion, respiration, and other functions.

Do Polychaetes have setae?

Polychaetes include such forms as sand worms, tube worms, and clam worms. Most have well developed, paired, paddle-like appendages (parapodia), well developed sense organs, and numerous setae (usually on the parapodia; "polychaete" means "many hairs").