VIVIPAROUS (Live birth) : VIVIPAROUS (Live birth) Fertilization is Internal
Development is Internal
Babies are born
Eg. Most mammals
Elasmobranch
Scorpions
Snakes (few)
Viviparous scorpions : Viviparous scorpions
Snake giving birth…. Viviparous : Snake giving birth…. Viviparous
Welcome to viviparity : Welcome to viviparity
Can a man produce snakes ? : Can a man produce snakes ?
Sharks give birth : Sharks give birth
We too give babies : We too give babies
ZYGOTE FORMATION : ZYGOTE FORMATION Diploid structure (single celled)
Universal in all sexually reproducing organisms
Zygote forms a thick wall
(Resistant to dessication)
Algae
Fungi
ZYGOTE : ZYGOTE Vital link …between two generations
Beginning of life as a single cell in sexually reproducing organism
EMBRYOGENESIS : EMBRYOGENESIS Process of development of embryo from the zygote
EMBYOGENESIS : EMBYOGENESIS = Development of Embryo from zygote
ZYGOTE
Cell division
Cell differentiation
EMBRYO
Development in animals : Development in animals
Slide 13 :
In flowering plants : In flowering plants Zygote develops inside the ovule
After fertilization all follower structures like Sepals, Petals & Stamens fall off.
In some, Sepals remains attached while the zygote develops into the Embryo.
Slide 15 : The Ovules develop into Seed
The Ovary develop into fruit
Fruits are protected by thick pericarp
Slide 16 :
Slide 17 : The Ovules develop into Seed
The Ovary develop into fruit
Fruits are protected by thick pericarp Seed Pericarp Berry
Slide 18 :
Slide 19 :
Monocot ovary (lily) : Monocot ovary (lily) Berry
Fruit of a cucurbit : Fruit of a cucurbit Seed Pericarp Pepo
Slide 22 :
Slide 23 : Pericarp Pod
Angio….. life cycle : Angio….. life cycle
Our cycle….That is how we do it : Our cycle….That is how we do it
How do we develop our gametes ? : How do we develop our gametes ?
Boy or a girl ? : Boy or a girl ?
Slide 28 : Ahaa …. Like our own !
Slide 29 : The End