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Osteichthyes The class of vertebrates comprising the bony fishes – marine and freshwater fish with a bony skeleton. All have gills covered with a bony operculum, and a layer of thin overlapping bony scales covers the entire body surface.
- What skin does Osteichthyes have?
- What body covering do bony fish have?
- What kind of Endoskeleton do Osteichthyes have?
- What characteristics do Osteichthyes have?
- Is a bony structure covering and protecting the gills?
- Which of the following is not the characteristics of the class Osteichthyes?
- What type of skeleton does a fish have?
- What type of body covering does reptiles have?
- How are mammals body covering?
- What is endoskeleton and exoskeleton?
- Which characteristic differentiates Class Chondrichthyes from class Osteichthyes?
- What are examples of exoskeletons?
- Which of the following belongs to class Osteichthyes?
What skin does Osteichthyes have?
The three categories of scales for Osteichthyes which are cosmoid scales, ganoid scales, teleost scales. The teleost scales are also then divided into two subgroups which are the cycloid scales, and the ctenoid scales.
What body covering do bony fish have?
Most species of bony fishes are covered with and protected by a layer of plates called scales. There are four different kinds of bony fish scales: cosmoid, ganoid, cycloid, and ctenoid.
What kind of Endoskeleton do Osteichthyes have?
Bony fishes (osteichthyes) are a diverse and large group that have an ossified endoskeleton. They include lobe- (sarcopterygii) and ray-finned (actinopterygii) fishes.
What characteristics do Osteichthyes have?
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.
Is a bony structure covering and protecting the gills?
The operculum is a bony flap of skin over their gills that protects the gills.
Which of the following is not the characteristics of the class Osteichthyes?
The option that is not a characteristic of the class Osteichthyes is b) a cartilaginous skeleton.
What type of skeleton does a fish have?
There are two different skeletal types: the exoskeleton, which is the stable outer shell of an organism, and the endoskeleton, which forms the support structure inside the body. The skeleton of the fish is made of either cartilage (cartilaginous fishes) or bone (bony fishes).
What type of body covering does reptiles have?
Reptiles are air-breathing vertebrates covered in special skin made up of scales, bony plates, or a combination of both. They include crocodiles, snakes, lizards, turtles, and tor- toises. All regularly shed the outer layer of their skin.
How are mammals body covering?
Mammals have fur or hair that covers their bodies. It helps keep them warm and dry. Lots of mammals have fur that helps them blend into their surroundings to help them hide from predators, too. Guiding Question: What animals have fur or hair?
What is endoskeleton and exoskeleton?
An exoskeleton is a hard external skeleton that protects the outer surface of an organism and enables movement through muscles attached on the inside. An endoskeleton is an internal skeleton composed of hard, mineralized tissue that also enables movement by attachment to muscles.
Which characteristic differentiates Class Chondrichthyes from class 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 are examples of exoskeletons?
Examples of animals with exoskeletons include insects such as grasshoppers and cockroaches, and crustaceans such as crabs and lobsters, as well as the shells of certain sponges and the various groups of shelled molluscs, including those of snails, clams, tusk shells, chitons and nautilus.
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.
