reproduction

2. What ? Who ?
Why?
• Life process
• Create young ones
• Animals
• Plants
How ?
• Sexual
• Asexual
• Transfer of DNA
• Inheritance traits
• Continuous existence of life
• Create variations and new species
• Enrich biodiversity
• Energy efficient over eternal
maintainace of life
REPRODUCTION

3. Sexual Reproduction
Asexual Reproduction
• One parent produce one or many
• Genetically identical young ones
• No Reproductive Organs
• No new variation or species
• Lower order of organisms
• Ex: Bacteria, protozoans, Algae, Runners, Root vegetables
• Two distinct individual male and female parent
participate
• Not genitically identical young ones
• Reproductive Organs are involved
• Gametes are produced by these organs that fuse
through fertilization to give rise to young ones
• New variation or species
• Higher order of organisms
• Ex. Angiosperms, vertebrata

4. Types of Asexual Reproduction
Ex: Amoeba, Bacteria Ex: Hydra, Yeast Ex: Spirogyra Ex: Fungi, Ferns Ex: Planaria, Starfish Ex: Runners, Suckers
Paramecium Bryophyllum Root vegetables
Fission Budding Fragmentation Sporulation Regeneration
Vegetative
Propogation

5. Sexual Reproduction in Plants
Flower is the reproductive part of the plant
Unisexual flowers and Bisexual flowers in plants
Male reproductive organ: Stamen (Anther and Filament)
Female reproductive organ: Carpel (Stigma style and Ovary,
Stamen
Pollen grains
Male gametes Ovary
Female gametes
Pollination initiates this process and allows the pollen grains adhere to the
sticky stigma
Fertilization: the male gametes travel down through style
Ovary where they fuse with the egg
Ovary turns into the fruit and the fused Ovule forms the seed inside the fruit

6. Life cycle of a plant
Reproduction is complete
after
• Seed dispersal and their
• Germination into
• Young saplings of the
mother plant