Question

write some common characters of Pisces,Reptilia and Aves

Answer 1

Hello mate.

Thanks for asking this question.

Your answer is =>

[1] $\boxed{\underline{Pisces} =}$

1) these are the aquatic animals which contains notochord which is a characteristic property of vertebrates.

2) The total number of species is nearly 40,000.

Study of fishes is called as Icthyology.

3) These are covered by a special type of exoskeleton called as $\underline{Scales}$

Scales are again of three types namely =:

$\boxed{(i)\:Placoid \:\: (ii) Cycloid \:\: (iii) ctenoid.}$

4) Respiratory organs are Gill Slits which are 5-7 in number covered by an operculum.

5) The heart is 2 chambered ( 1 auricle and 1 ventricle.)

6) Kidneys are Mesonephric and excretion is ammonotelic.

[2] $\boxed {\underline{Reptilla} :=}$

1) Total number of species is 6000 nearly.

2) these are mostly called as " Creeping animals " and their study is called as Herpetology.

3) Reptiles are originated during Carboniferous period.

4) Reptiles are mostly terrestrial , Carnivorous and Tetrapod animals.

5) Exoskeleton is of Horny epidermal scales , shields , Plates and Scutes.

6) Endoskeleton is Monocondylic skull and oosified bony structures.

7) Heart is 3 chambered except in crocodile ( 4 chambered ).

8) unisexual animals mostly.

[ 3] $\boxed {\underline{Aves} :=}$

1) Birds are the feathered Bipedes , oviparous , truly flying vertebrates.

2) Jaw bones are much prolonged and modified into toothless Beak or Bill.

3) Skin is without Glands , only a cutaneous gland called " Uropygeal Gland " or " Preen Glands ".

4) Flight muscles are present which are of three types :=

i) $\underline{Pectoral \:muscles}=>$

- pectoralis major and minor.

ii) $\underline{Accessory \:muscles}=>$

Coraco - brascialis Longus and Brevis.

iii) $\underline{Tensor\: muscles}=>$

tensor Longus , brevis and acceserious.

5) Kidneys are metanephric and without Urinary bladder.

excretion is $Uricotellic.$



#BeBRAINLY
#BeHAPPY

Answer 2

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

$\textbf{PICES}$


→ It includes all water living animals.

→ They have 2 chambered heart.

→ Gills are present in them which helps in respiration.

→ Muscular tail is present for movement.

→ These are cold blooded animals.

→ Ex :- Dog fish, Rohu, Shark etc.
___________________________________


$\textbf{REPTILIA}$


→ These are first vertebrates fully adopted for life on dry land. Some live in water but they also return to the land for breeding.

→ The heart is incompletely 4 chambered having two auricles and a partly divided ventricle. (Crocodiles have 4 chambered heart)

→ Respiration occurs by lungs.

→ Two pairs of limbs are present in them which act as appendages.

→ Ex :- Lizards, Snakes, Tortoise, Crocodiles etc.
__________________________________


$\textbf{AVES}$


→ This class includes all birds. Most of them can fly. A few lost the power to fly.

→ Heart is 4 chambered having two auricles and two ventricles. Heart is relatively large and fast beating for quick supply of adequate amount of blood during flight.

→ Respiration takes place by lungs.

→ Pair of limbs are present in them. The forelimbs are modified into wings for flight.

→ Ex :- Ostrich, Crow, Peacock, Pigeon etc.
________________________________________________