vertebrate animals

Description of chorodata

Endangered species of frog(amphibian)

Chorodata is the largest phylum of the most developed animals of division Deuterostomia.It was named by Balfour in 1880.The word Chorodata is derived from two Greek words"chorde" which means a string or cord and "ata" which means bearing. So Chorodata are animals bearing stiff-rod like structure along the backbone.

chimpanzee(mammalia)

crocodile(reptilia)

The phylum chorodata is the highest and the most important phylum comprising a vast variety of living and extinct animals including manhimself.

big fish(pisces)

Most of the living chordates are the well known familiar vertebrate animals such as the fishes, amhibians,reptiles ,birds and mammals. Besides these chordates also include a number of marine forms such as the tunicates and lancelets that are less

well known.The chorodata has three subphylum Cephalochorodata, Urochorodata

lancelets

Tunicates

and vertebrata .

Types of vertebrate animals on basis of body temperature.

1) Warm blooded animals :-
The vertebrate animals whose body temperature remain constant or do not change their body temperature according to surrounding are called warm blooded animals.These animals are more developed .The different types of vertebrate animals have certain body temperature at all places whether it goes to very cold places or to very hot places .Among the five classes of vertebrate animals the aves and mammals are warm blooded animals.
2) Cold blooded animals:-
The vertebrate animals whose body temperature changes from place to place or do not have constant body temperature are called cold blooded animals.These animals are also developed .These animals keep on changing their body temperature according to surrounding. Among the five classes of vertebrate animals the three classes namely pisces, amphibians and reptilia are the cold blooded animals.

Classification of animals on basis of cells present in body

Amoeba

Euglena

Protozoa:- The animals whose body is made up of one cell is called Protozoa. These animals are also found in water and land . They are microscopic or can not be seen with our naked eyes.Some of them are parasite causing diseases in human like plasmodium , amoeba where as some are saprophyte helping in disposal of dead decaying things.These animals which help

in decaying the dead body of plant and

animals are also called decomposer.

All the function of the animals are

carried out by the cell of the animals.

These animals do not have well developed

paramecium

systems. All these animals have definite

shape except amoeba.

Examples are paramecium, entamoeba, euglena etc

Plasmodium vivax

Plasmodium falciparum

peacock(bird)

Metazoa:-The animals whose body is made up of more than one cell is known as metazoa. It includes large group of animals which may be vertebrates or invertebrates. They are more developed than protozoa and their body have well developed systems.There are

cockro

nine phylum of invertebrates including
protozoa also in
it and five classes of vertebrates

Giant monkey(mammal)

rohu(fish)

Green Newt(amphibian)

green lizard(reptile)

Introduction of vertebrate animals

The earth is full of living things. There are two types of living things. They are plants and animals. These plants and animals body is made up of cells . The animals and plants body can be made up of one or more cells.These animals may be found on land or water. There are many animals found around us .All these animals are classified into two on the basis of the number of cells their body is made up of .These types are protozoa and metazoa.