Why are chitons called Polyplacophora?
That is why it is also called perinotum or girdle. The back itself is protected by eight overlapping calcareous shell plates, which give the chiton its gauntlet-like appearance….Chitons (Placophora)
| Class | Species No. |
|---|---|
| Solenogastres | 230 |
| Caudofoveata | 120 |
| Molluscs (Mollusca) | 55.400 |
What is the common name for Polyplacophora?
Polyplacophora
| Common Name | Scientific Name |
|---|---|
| Common Eastern Chiton | Chaetopleura (Chaetopleura) apiculata |
| Common West Indian Chiton | Chiton (Chiton) tuberculatus |
| Common West Indian Chiton | Chiton (Chiton) tuberculatus |
| Concealed Arctic Chiton | Amicula vestita |
How do you identify Polyplacophora?
The main characteristics of Polyplacophora include (1) elongate or oval, dorsoventrally flattened, bilaterally symmetrical, marine; (2) with dorsal shell of eight plates embedded in a tough mantle; (3) mantle-edge stiffened (called the girdle); (4) large, muscular, ventral foot (girdle and foot can act as suction cup); …
Are Polyplacophora all marine?
Polyplacophorans include about 600 extant species. Entirely marine, they inhabit hard bottoms and rocky coasts in all of the world’s oceans. Although commonly intertidal, living chitons have been dredged from waters as deep as 7000 m.
What is an example of a Polyplacophora?
ChitonidaNeoloricataChitoninaMopaliidaeLeptochito…Lepidople…
Chitons/Lower classifications
What is phylum of class Polyplacophora?
MolluscaChitons / Phylum
Where did Polyplacophora live?
rocky intertidal zone
Most live in the rocky intertidal zone or shallow sublittoral (just below the low tide level), but some live in deep water to more than 7000 m. A few species are associated with algae and marine plants, and in the deep sea, waterlogged wood is a common habitat for one group.
What makes Polyplacophora unique?
Which of the following is an example of Polyplacophora?
So, the correct answer is ‘ Chiton.
How many gills do Polyplacophora have?
two
The two large gills are located laterally, beside the visceral mass in about the middle of the mantle cavity. Each is long and feathery and composed of gill filaments projecting from a longitudinal central axis.
What are characteristics of Polyplacophora?
What are examples of Polyplacophora?
What is the meaning of polyplacophora?
(poly-plac-o-phor-a (lor-i-cat-a)) Latin meaning: poly = many plac = plate phor = carry, i.e.: bearer of many plates. The polyplacophorans, commonly known as chitons, are often considered by scientists to be the most primitive of all existing molluscs.
What happens to the eggs of polyplacophora?
Once the eggs are fertilized, they become free-swimming larvae and then turn into a juvenile chiton. Here are a few more facts that we know about Polyplacophora: The word is pronounced poly-plac-o-for-a. Chitons are also referred to as sea cradles or “coat-of-mail shells.”
What is the most primitive Mollusca?
The polyplacophorans, commonly known as chitons, are often considered by scientists to be the most primitive of all existing molluscs. Strictly marine, the majority of the chiton species inhabit rocky seashore environments where their low dome-shaped shells are well suited to withstanding the violent serge of ocean waves.
What is the difference between chitons and Polyplacophora?
In the Chitons or Polyplacophora, on the other hand, the two cavities are separate, and there are independent genital ducts.