Why is chondrichtyes in class?

Chondrichthyes is a class of jawed fishes having a cartilaginous skeleton. The class includes a diverse group of fishes including sharks, rays, skates and chimaeras. They are mostly marine fishes.
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Chondrichthyes Classification.

1. Is Chondrichthyes a class?
2. What characterizes the Chondrichthyes class?
3. What characteristics do class Chondrichthyes share?
4. What phylum and subphylum is the class Osteichthyes under?
5. What are the characteristics of class Osteichthyes?
6. What is the largest animal in the class chondrichthyes?
7. In which class of fishes Endoskeleton is cartilaginous?
8. Why cartilaginous fishes are Ureotelic?
9. Are chondrichthyes vertebrates or invertebrates?
10. What is the primary difference between organisms belonging to the classes chondrichthyes and osteichthyes?
11. What is the connecting link between chondrichthyes and osteichthyes?
12. Which of the following belongs to class osteichthyes?
13. Which groups are included within the osteichthyes?

Is Chondrichthyes a class?

chondrichthyan, (class Chondrichthyes), also called chondrichthian, any member of the diverse group of cartilaginous fishes that includes the sharks, skates, rays, and chimaeras.

What characterizes the Chondrichthyes class?

Species in this class have paired fins, hard scales, a two-chambered heart, and a pair of nostrils. Most species have 5-7 gill slits on each side of their body.

What characteristics do class Chondrichthyes share?

Members of Chondrichthyes all lack true bone and have a skeleton made of cartilage (the flexible material you can feel in your nose and ears). Only their teeth, and sometimes their vertebrae, are calcified; this calcified cartilage has a different structure from that of true bone.

What phylum and subphylum is the class Osteichthyes under?

bony fish, (superclass Osteichthyes), any member of the superclass Osteichthyes, a group made up of the classes Sarcopterygii (lobe-finned fishes) and Actinopterygii (ray-finned fishes) in the subphylum Vertebrata, including the great majority of living fishes and virtually all the world's sport and commercial fishes.

What are the characteristics of class Osteichthyes?

Class Osteichthyes includes all bony fishes. Like all fishes, Osteichthyes are cold-blooded vertebrates that breathe through gills and use fins for swimming. Bony fishes share several distinguishing features: a skeleton of bone, scales, paired fins, one pair of gill openings, jaws, and paired nostrils.

What is the largest animal in the class chondrichthyes?

The world record for the largest fish is a whale shark measuring 40 feet (12.2 m).

In which class of fishes Endoskeleton is cartilaginous?

Chondrichthyes. Chondrichthyes is a class that contains sharks, skates, rays and chimeras. They are jawed vertebrates, with skeletons made of cartilage instead of bone. The class can be divided into two subclasses; Elasmobranchii (sharks, rays, skates, and sawfish) and Holocephali (chimaeras).

Why cartilaginous fishes are Ureotelic?

They have no ordinary urinary tract, so they concentrate urea in their blood and excrete it through their skin. Thus, sharks, along with most other cartilaginous fish are ureotelic. Note: Species that excrete uric acid waste are referred to as uricotelic organisms.

Are chondrichthyes vertebrates or invertebrates?

They can be contrasted with the Osteichthyes or bony fishes, which have skeletons primarily composed of bone tissue. Chondrichthyes are jawed vertebrates with paired fins, paired nares, scales, and a heart with its chambers in series.

What is the primary difference between organisms belonging to the classes chondrichthyes and osteichthyes?

The main difference between Chondrichthyes and Osteichthyes is that the Chondrichthyes is the class of bony fish whose endoskeleton is made up of cartilages whereas Osteichthyes is the class of cartilaginous fish whose endoskeleton is made up of bones.

What is the connecting link between chondrichthyes and osteichthyes?

Chimaera, also known as Rabbit fish, is considered as the connecting link between cartilaginous and bony fishes.

Which of the following belongs to class osteichthyes?

The correct option is: d ClariasExplanation:Trygon Scoliodon and Pristis belong to Chondrichthyes. Clarias Magur is a cat fish which belongs to Osteichthyes.

Which groups are included within the osteichthyes?

Osteichthyes, or bony fishes, includes two major groups: Sarcopterygii, or lobe-finned fishes, and Actinopterygii, or ray-finned fishes.