5 Questions
What type of skeleton do Osteichthyes have?
Endoskeleton with extensive ossification
Which subclass do Osteichthyes belong to?
Ray-finned fish (Actinopterygians)
What is the function of the operculum in the respiratory system of osteichthyans?
To provide a protective cover
Which type of tail do Osteichthyes have?
Homocercal tail
What is the function of the pectoral fin in some bony fishes?
Locating food through taste buds
Study Notes
Osteichthyes Characteristics
- Osteichthyes have a bony skeleton.
- They belong to the subclass Actinopterygii or Sarcopterygii.
- The operculum, a bony flap, protects the gills and helps to regulate the flow of water during respiration.
- Osteichthyes have a homocercal tail, which means it is symmetrical and has the same shape on both sides.
- In some bony fishes, the pectoral fin is modified to perform functions such as crawling, grasping, or even lunging forward.
Test your knowledge of Osteichthyes characteristics and classification. Explore the unique traits such as bony skeleton, operculum-covered gills, and homocercal tail. Learn about the subclasses - lobe-finned fish and ray-finned fish.
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