Answer. Dogfish are a type of shark, which is an organism in the Chordata phylum. One of the defining characteristics of this phylum is the display of bilateral symmetry, with identical left and right sides as well as a distinct head and tail end.
What type of symmetry is a shark?
All animals with radial symmetry live in water. Examples: starfish, jellyfish, anemone, polyps, etc. Examples: butterfly, grasshopper, tiger, bear, centipede, bat, shark, human, dog, snake, turtle, etc.
Do sharks have bilateral symmetry?
Bilateral symmetry is characteristic not only of ctenoid and cycloid scale of teleostean fishes, but also of placoid scales of sharks ( Fig. 1) (Chernova and Vorobyeva, 2012).
Is a shark radial or bilateral?
Hydra (a cnidarian) is radially symmetrical and shark (a fish) is bilaterally symmetrical.
Are sharks symmetric?
From snowflakes to sunflowers, starfish to sharks, symmetry is everywhere in nature. Not just in the body plans which govern shape and form, but right down to the microscopic molecular machines keeping cells alive.
What sea animal has radial symmetry?
Radial symmetry is found in the cnidarians (including jellyfish, sea anemones, and coral) and echinoderms (such as sea urchins, brittle stars, and sea stars).
What type of symmetry do fish have?
Bilateral symmetry
Bilateral symmetry is characteristic of the vast majority of animals, including insects, fishes, amphibians, reptiles, birds, mammals, and most crustaceans.
Is Dogfish a bilateral symmetry?
Dogfish are a type of shark, which is an organism in the Chordata phylum. One of the defining characteristics of this phylum is the display of bilateral symmetry, with identical left and right sides as well as a distinct head and tail end.
Which animal is bilaterally symmetric?
People, dogs, cats, and elephants all have bilateral symmetry. Animals with radial symmetry have body parts arranged around a central point. Any line drawn from one side through the center to the opposite side will divide the animal into two symmetrical halves.
Which animals is bilateral symmetry?
Bilateral symmetry is characteristic of the vast majority of animals, including insects, fishes, amphibians, reptiles, birds, mammals, and most crustaceans.
What is bilateral or radial symmetry?
A sort of body symmetry in which every plane passing through the centre divides the body into two equal halves is known as radial symmetry. Bilateral symmetry: Body symmetry is described as the ability to split the body into two identical halves in just one plane.
What is bilateral symmetry?
When the body plan of an animal can be divided along a line that separates the animal’s body into right and left halves that are nearly identical of each other, it is said to have bilateral symmetry.
What is bilateral vs radial symmetry?
The two main types of symmetry are radial symmetry (in which body parts are arranged around a central axis) and bilateral symmetry (in which organisms can be divided into two near-identical halves along a single plane).
Is shark analogous or homologous?
Another example of analogous structures are dolphins and sharks as whole species. Although we might think of dolphins and sharks as being relatively similar, their morphology says otherwise. Dolphins are mammals that have live births and have fins with a homologous structure to human arms.
Why is nature symmetry?
According to one, a body that is bilaterally symmetrical is easier for the brain to recognize while in different orientations and positions, thus making visual perception easier. Another popular hypothesis is that symmetry evolved to help with mate selection.
Why are all animals symmetric?
Having bilaterally symmetrical bodies (the same on both sides along an axis) permit them to propel forward in a straight line. In evolutionary history, animals that moved quickly and efficiently from point A to point B would have been more successful and selected for than those who were ineffective at locomoting.
What is an example of radial symmetry?
Radial symmetry relates to an arrangement around a central point, where the pattern is consistent and repeats. Common examples would be four-leaf clovers, jellyfish, sea stars, and roses. Bilateral symmetry is best described as one half of an object/organism being a mirror image of the other half.
What is an example of bilateral symmetry?
Examples of animals that possess bilateral symmetry are: flatworms, common worms (“ribbon worms”), clams, snails, octopuses, crustaceans, insects, spiders, brachiopods, sea stars, sea urchins, and vertebrates.
What is an example of an animal with asymmetrical symmetry?
Only sponges (phylum Porifera) have asymmetrical body plans. Some animals start life with one type of body symmetry, but develop a different type as adults; for example, sea stars are classified as bilaterally symmetrical even though their adult forms are radially symmetrical.
Can a fish have radial symmetry?
Floating animals such as jellyfish also show this symmetry. -Like other chordates, fishes have a bilaterally symmetrical body. -Mollusks are also bearing a bilaterally symmetrical body. So, the correct answer is “Radial symmetry occurs in starfishes and few species of sponges”.
Are fish radially symmetrical?
Animals With Bilateral Symmetry
Most creatures we see around us have bilateral symmetry. Examples are worms, insects, spiders, fish, birds and mammals, including humans.