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1. REPRODUCTION& DEVELOPMENT IN REPTILES
Reptile Reproduction
Most reptiles reproduce sexually and have internal fertilization. Males
have one or two penises that pass sperm from their cloaca to the cloaca
of a female. Fertilization occurs within the cloaca, and fertilized eggs
leave the female’s body through the opening in the cloaca. In a minority
of species, the eggs are retained inside the female’s body until they
hatch. Then the offspring leave the mother’s body through the cloaca
opening

2. AMNIOTIC EGG
•Amnion: the innermost membrane
of the fetal membranes of amniotes;
the sac in which the embryo is
suspended; protects the embryo from
shock and carries out hydration
•Chorion: allows exchange of oxygen
and carbon dioxide between the
embryo and the egg’s external
environment
•Allantois: membrane in an egg that
stores nitrogenous wastes produced
by the embryo and facilitates
respiration

3. Reproduction Methods
Reproduction Methods
Oviparous – egg layers
Viviparous – live birth
Ovoviviparous – eggs stay inside of mother until
they are ready to hatch, then the eggs hatch inside
of the mother and babies come out like live birth
Snakes. Snakes may be oviparous, ovoviviparous,
or viviparous. Most snakes are oviparous.Snakes
lay there eggs under rocks, hollow logs, in the
ground, or anywhere warm. Snakes also do not
provide parental care.

4. Parental Care
Crocodilians. Crocodilians are only oviparous. Crocodilians
court females like lizards, but they mate in the water. Females
build nest out of water. Eggs are laid in nest and then covered
up by the mother.
Parental Care.
Female show amazing parental care.
The female will not eat during this time.
Turtles.
Turtles are oviparous (lay eggs that hatch later) Female
turtles lay eggs in a nest that they dig (usually in the soil or
sand). The females leave after laying eggs, no parental care

5. Parthenogenesis
Parthenogenesis . from the Greek, pantheons, 'virgin' genesis, 'creation'
is a natural form of asexual reproduction in which growth and
development of embryos occur without fertilization by sperm.
In animals, parthenogenesis means development of an embryo from an
unfertilized egg cell.
Lizards .All-female (parthenogenetic) species occur in at least 6 families
Especially common among racerunners (Teiidae) Diploids and triploids
known