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A Handbook of Biology

Sexes are

separate.

External

fertilisation.

Oviparous.

Development

is indirect.

Internal fertilisation.

Oviparous.

Development is

direct.

Internal fertilisation.

Oviparous.

Development is

direct.

Sexes are separate.

Internal fertilisation.

Viviparous

(except Echidna

and Platypus).

(Karnataka NEET

2013)

Development is

direct.

Examples :

Bufo (Toad),

Rana (Frog),

Hyla (Tree

frog),

Salamandra

(Salamander),

Ichthyophis

(Limbless

amphibia)

Examples :

Chelone (Turtle),

Testudo (Tortoise),

Chameleon (Tree

lizard), Calotes

(Garden lizard),

Crocodilus

(Crocodile), Alligator,

Hemidactylus

(Wall lizard).

venomous snakes

: Naja (Cobra),

Bangarus

(Krait), Vipera (Viper)

etc.

Non-venomous

snakes: Python etc.

Examples :

Corvus (Crow),

Columba (Pigeon),

Psittacula (Parrot),

Struthio (Ostrich),

Pavo (Peacock),

Gullus (Fowl),

Bubo (Owl),

Aptenodytes

(Penguin),

Neophron (Vulture)

etc.

Examples :

Ornithorhynchus

(Platypus ),

Macropus

(Kangaroo),

Pteropus (flying

fox), Camelus

(Camel),

Macaca (Monkey),

Rattus (Rat),

Canis (dog), Felis

(Cat), Elephas

(Elephant), Equus

(Horse), Delphinus

(Common

dolphin),

Balaenoptera (blue

whale), Panthera

tigris (Tiger),

Panthera leo (lion)

Notes