What are 2 characteristics of sharks?
There are seven anatomic characteristics of sharks:
- Cartilage Skeleton.
- Skin covered with dermal denticles.
- Powerful Jaws.
- Efficient Liver.
- Anatomic Tail.
- Dynamic Fins.
- Highly Developed Senses.
What are the main characteristics of sharks?
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the rays.
What are the physical characteristics of a shark?
Most sharks have a muscular, asymmetrical, upturned tail; pointed fins; a pointed snout; and sharp triangular teeth. Sharks have no swim bladder and must swim perpetually to keep from sinking. Most species bear living young.
What are the characteristics of sharks quizlet?
sharks have lived for millions of years. sharks have six senses — touch, smell, taste, site, electroreception and hearing. Pectorial fins are in the very front of the shark . Their is a set of two and they are very large.
What is unique about sharks?
1. Sharks do not have bones. Sharks use their gills to filter oxygen from the water. They are a special type of fish known as “elasmobranchs”, which translates into fish made of cartilaginous tissues—the clear gristly stuff that your ears and nose tip are made of.
Are sharks colorblind?
Their study shows that although the eyes of sharks function over a wide range of light levels, they only have a single long-wavelength-sensitive cone* type in the retina and therefore are potentially totally color blind. …
Do sharks have lateral lines?
In addition to those we have – sight, hearing, touch, smell and taste – sharks have two other senses, mediated by specialized receptors: electroreceptors and lateral lines. A shark’s most acute sense, the one it may use to detect prey from the greatest distance, is probably its sense of hearing.
What are the qualities of a shark?
General characteristics of sharks include: five to seven external gill slits on each side of the head (with no protective gill cover as in bony fishes); skin covered with placoid scales known as denticles; teeth that are regularly shed and replaced; an upper jaw that is not firmly attached to the skull;
What are facts about sharks?
Sharks whip their prey around back and forth in order to break off large chunks of meat. Sharks have the thickest skin of any animal species. Some sharks have skin that is 6 inches thick. Sharks have the largest brains of any fish.
What are the characteristics of the shark anatomy?
Physical Characteristics Size. The largest of the sharks is the whale shark ( Rhiniodon typus ). Body Shape. Sharks typically have a fusiform body (rounded and tapered at both ends). Coloration. Sharks and batoids are generally drably countershaded. Fins. Fins are rigid, supported by cartilaginous rods. Head. Eyes are lateral on sharks, dorsal on batoids. Scales. Spines. …
General characteristics of sharks include: five to seven external gill slits on each side of the head (with no protective gill cover as in bony fishes); skin covered with placoid scales known as denticles; teeth that are regularly shed and replaced; an upper jaw that is not firmly attached to the skull;
What are some characteristics about all sharks?
- and lack of nictitating membranes in their eyes.
- Squaliformes. This order includes species characterized by having two dorsal fins and five gill slits.
- Squatiniformes.
- Pristiophoriformes.
- Heterodontiformes.
- Orectolobiformes.
Sharks whip their prey around back and forth in order to break off large chunks of meat. Sharks have the thickest skin of any animal species. Some sharks have skin that is 6 inches thick. Sharks have the largest brains of any fish.
Physical Characteristics Size. The largest of the sharks is the whale shark ( Rhiniodon typus ). Body Shape. Sharks typically have a fusiform body (rounded and tapered at both ends). Coloration. Sharks and batoids are generally drably countershaded. Fins. Fins are rigid, supported by cartilaginous rods. Head. Eyes are lateral on sharks, dorsal on batoids. Scales. Spines.
