CLASS : AMPHIBIA
GENERAL CHARACTERS
- 1 These are cold blooded vertebrates.
- Skin is smooth or rough, rich in glands
- 3Skin is with large numbers of mucus glands
- Limbs are with webbed digits
- 5 Red blood cells are biconvex, oval and nucleated.
- 6Three chambered heart, two auricles and one ventricle.
- gills are present in tadpole stage
- Eggs with gelatinous covering, usually laid in water.
- The larva pass through aquatic stage before metamorphosing in to adult.
ICHTHYOPHIS
Phylum –Chordata (Notochord is present, Dorsal tubular nerve cord.)
Sub-phylum – Vertebrata (Vertebral column is present)
Class – Amphibia ( cold blooded, aquatic and terrestrial, skin moist)
Order – Apoda (Burrowing vermiform, without limbs& girdles.)
Genus – Ichthyophis
Species - glutinosa
Sub-phylum – Vertebrata (Vertebral column is present)
Class – Amphibia ( cold blooded, aquatic and terrestrial, skin moist)
Order – Apoda (Burrowing vermiform, without limbs& girdles.)
Genus – Ichthyophis
Species - glutinosa
CHARACTERS
1. Ichthyophis is a burrowing elongated & eel type animal.
2. Ichthyophis is a burrowing elongated & eel type animal.
2. It measures up to 30 cm in length.
3. The colour of body is dark brown or bluish black with a yellow band along the side.
4. Fertilization is external.
5. Completely aquatic.
.FROG
• Phylum –Chordata (Notochord is present, Dorsal tubular nerve cord.)
• Sub-phylum – Vertebrata (Vertebral column is present)
• Class – Amphibia ( cold blooded, aquatic and terrestrial, skin moist)
• Order – Anura (Tail less animal)
• Genus – Rana
• Species – tigrina
Characters –
1.It is commonly called as bull frog
2. Body is green with black patches
3. Head is flat & more or less triangular
4. eyes are large with eyelid & nictating membrane.
5. A pair of tympanum lie behind eyes
6. Carnivorous, feeding small worms, snails, aquatic insects.
TOAD
Phylum –Chordata (Notochord is present, Dorsal tubular nerve cord.)
Sub-phylum – Vertebrata (Vertebral column is present)
Class – Amphibia ( cold blooded, aquatic and terrestrial, skin is moist)
Order – Anura (Tail less animal)
Genus – Bufo
Species – melanosticus
Sub-phylum – Vertebrata (Vertebral column is present)
Class – Amphibia ( cold blooded, aquatic and terrestrial, skin is moist)
Order – Anura (Tail less animal)
Genus – Bufo
Species – melanosticus
CHARACTERS
1. It is commonly called as true- toad.
2. Skin is rough, dry and watery on the dorsal surface of the body.
3. Eyes are large & nostrils are very small.
4. Tympanum is very well developed.
5.Paired parotid glands are present behind the tympanum ,These secrete poison fluid which is irritating.
6. Fore limb bear three web less fingers & a thumb pad.
7. Hind limb have three toes with a greatly reduced web.
SALAMANDER
Phylum –Chordata (Notochord is present, Dorsal tubular nerve cord.)
Sub-phylum – Vertebrata (Vertebral column is present)
Class – Amphibia ( cold blooded, aquatic and terrestrial, skin moist)
Order – Apoda (Burrowing vermiform, without limbs& girdles.)
Genus – Ichthyophis
Species - glutinosa
Sub-phylum – Vertebrata (Vertebral column is present)
Class – Amphibia ( cold blooded, aquatic and terrestrial, skin moist)
Order – Apoda (Burrowing vermiform, without limbs& girdles.)
Genus – Ichthyophis
Species - glutinosa
CHARACTERS:
1. Salamandra is commonly known as European fire-salamander & terrestrial in habit.
2. Body is lizard like in appearance. The colour is black with yellow spots.
3.Limbs are well developed & strong. Tail is cylindrical.
4. Eye lids are movable. Tympanic membrane or middle ear is absent.
5. Teeth are present on both the jaws.
6. Young-ones born having the external gills & metamorphosis takes place later.
