Class : Reptilia:
Reptilia:
characterized by creeping / crowling mode of locomotion.
Means that reptili name comes from there creeping mode of locomotion.thats why all living things they have creeping more of locomotion know as reptile.
Habitat :
mostly terrestrial :
It means that most of the class of animal living on land.
External fetures:
Body covered by dry cornified skin epidermal scales /scutes .Do not have external ear , tympanum present .
Heart is three chambered but it is four chambered in crocodile.
Poikilothermos .
Snakes and lizard there scale as skin cast .
Reproduction:
sexes are separate .Fertilization is internal .
Reptiles are oviparous.
Development:
Direct.
EXAMPLE :
Chelone( Turtle ),testudo( tortoise),chameleon( tree lizard ),
Calotes (Garden lizard ) ,Crocodilus (Crocodile), Alligater( alligator ),
Hemidactylus (wall lizard),
Poisonous snakes Naza( cobra), Bangarus(Karait),vipera (Viper).
CLASS — AMPHIBIA (VERTEBRATE WITH DUAL LIFE)
It is only class of vertebrates which are exclusively fresh water:Smallest class of vertebrates.
Ona
लाया
Invasion of Land - The amphibians were the first vertebrates to invade land, but they have not fully adapted to
terrestrial life. They and their eggs have no protective coat to check evaporative water loss, her
inhabit damp places and breed in water. This dual mode of life is expressed in their name (amphi = two; bios =
life).
अंजान
Herbivoresome presentlatera
Life Phases - The amphibians generally have no phases in their life - (i) Larval stage, called tadpole is fish-
like, lives in water swims with tail and respires with gills: (ii) Adult stage is terrestrial, moves a
and respires with lungs, buccopharyngeal lining and skin carnivorou , no oterou
Can live both in water and on land
Body divisible into head and trunk with two pairs of limbs; tail may be present in some
(g) Alimentary canal, excretory and reproductive tracts open into common opening called coaca on the exterior
Skin is moist without scales.
(1) Eyes have eyelids and ear is represented by tympanum.
6) Respiration can be by gills, lungs, and skin.
ky Heart is three-chambered (two guricles and one ventricle).
U Poikilothermous (5197 olla
(m) Reproduction -
Sexes are separate.
Fertilization - External
COM
Salamander
They are oviparous.
TOOD
Development - Indirect
Rana
eg - Bufo (Toad), Rana (Frog), Hyla (Tree frog), Salamandra (Salamander), Ichthyophis (Limbless amphibia).
A Ungnt cona
* Excretory tract
--Reproductive
& cloeken
impenum
CLASS — REPTILIA
Chanyes it's
Colour
जाता
CLASS – REPTILIAS. Soles present IMS)
noy Characterized by creeping/ crawling mode of locomotion
B Habitat - Mostly terrestrial Keratin parolein Prelery
(C) Body covered by dry cornified skin, epidermal scales / scutes
(d) Do not have external-ew's, lymphanum present
@ Two pairs of limbs, when present
Crocodilus
V Heart is three-chambered, but it is four-chambered in crocodiles.
@ Poikilothermous fool
Snakes and lizards shed their scales as skin čast.
Naja
Reproduction -
Sexes are separate.
Fertilization is internal. Reptiles are oviparous.
Development - Direct
Chelone
e.g. - Chelone (Turtle), Testudo (Tortoise), Chameleon (Tree lizard), Calotes (Garden lizard), Crocodilus (Crocodile),
Alligator (Alligator), Hemidactylus (Wall lizard), Poisonous snakes - Naja (Cobra), Bangarus (Krait), Vipera (Viper).
Prehensile
talljgils
(coil 191
by the helpot Hormon
Tecdysonel
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