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Why do you suppose four appendages is the rule for vertebrates rather than five or six?
Wiki User
∙ 14y ago
That is purely an accident of evolutionary history.
Wiki User
∙ 14y ago
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In respiration where do the five classes of vertebrates get each reactant from and how do they absorb it into their lungs?
Glucose is taken from food.Oxygen is taken through air
What are the eight classes of vertebrates?
There are five main classes of vertebrates, but one of these classes is divided into three classes, giving a total of seven classes altogether.Mammals (Mammalia)Birds (Aves)Reptiles (Reptilia)Amphibians (Amphibia)Fish - which in turn are subdivided into:Agnatha (jawless fish without scales, e.g. lampreys and hagfish);Chondrichthyes (sharks and rays, which have skeletons of cartilage rather than bone)Osteichthyes (all the bony fish e.g. tuna, trout, whiting, etc.)
How many classes of vertebrate exist?
There are seven classes of vertebrates.The five main classes of vertebrates are:Mammals (Mammalia)Birds (Aves)Reptiles (Reptilia)Amphibians (Amphibia)Fish - which in turn are subdivided into Agnatha (jawless fish without scales, e.g. lampreys and hagfish); Chondrichthyes (sharks and rays, which have skeletons of cartilage rather than bone); and Osteichthyes (all the bony fish e.g. tuna, trout, whiting, etc.)
Which of these characteristics of five year old Eric is most likely a result of environment rather than heredity?
eric likes has to play baseball
How many rings does Neptune have in all?
Neptune has five main rings. They are very difficult to see with the naked eye because they are rather faint.
What are the appendages of a lion?
a lion has five diffrent apendages because appendages are arms legs and tails
What is a squids to longest appendages called?
A squid has ten appendages. A squid's appendages are arranged in five pairs. The longest pair of appendages, the fourth pair, are called tentacles or feeder arms.
What has five appendages?
a starfishFour legs, 12 toes.
The vertebrates are further divided into five groups or classes?
The vertebrates are further divided into five groups or classes.
Five groups of Vertebrates?
FishAmphibiansReptilesBirdsMammals
Do all living vertebrates have five digits?
No, most living vertebrates have different numbers of digits, anywhere from none to five, and sometimes even six.
What is the root meaning of pentadactyl?
Having five digits to the hand or foot., Having five appendages resembling fingers or toes.
What are the two groups of vertebrates?
There are five groups of vertebrates; fish, amphibians, reptiles, birds and mammals.
Why does a penguin belong to the birds vertebrate?
Because Birds ARE Vertebrates!!!!! The Five Vertebrates Are Mammals, Amphibians, Reptiles, Birds And Fish.
How can you split vertebrates?
Vertebrates can be classified into mammals, aves(birds), reptiles, amphibians and pisces(fishes).
Name 5 organs found in most vertebrates?
Five organs that are found in most vertebrates are the brain, stomach, heart, eyes and skin. Vertebrates are animals that have a spine.
What are five things that crayfish can do with its appendages?
They use them to Walk,Swim,Defend Itself,Smell,and catching prey.
