Question

how are vertebrata classified into sub group

Answer 1

$\textbf{Answer is in Attachment !}$

Answer 2

$here \: is \: the \: answer \: of \: your \: question$

1. Pisces :-

* Water living animals.

* Two chambered heart is present.

* Muscular tail for movement is also present.

* Skin covered with scales.

* Cold blooded animals.

* Ex :- Rohu fish, shark, dog fish etc.

2. Amphibians :-

* Lives in both water and land.

* Three chambered heart is present.

* Respiration takes place by gills, lungs, skin etc.

* The body varies in form. It may be long, short, narrow, cylindrical etc.

* Ex :- Frog, toad, salamander etc.

3. Reptilia :-

* They live in both water and land.

* Respiration occurs by gills.

* Heart is incompletely four chambered.

* Skin with scales.

* Body is different in forms like short, long, narrow, depressed etc.

* Ex :- Lizards, snake, crocodile etc.

4. Aves :-

* It includes birds.

* Respiration takes place by lungs.

* They have four chambered heart.

* Pair of limbs are present. Forelimbs are modified into wings which help in flight. And hindlimbs are used for walking, perching etc.

* Ex :- Ostrich, peacock, pigeon etc.

5. Mammals :-

* Body is various in shape and generally divided into head, neck, trunk and tail.

* Skin gland are also present.

* Pair of limbs are present which help in jumping, running, walking etc.

* They respire through lungs.

* Heart is four cheambered.

* Ex :- Kangaroo, human beings, elephant, giraffe, cat etc.


$hope \: it \: helps \: you.$