Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
SlideShare a Scribd company logo

Asexual reproduction

•
•
M
Mark Daniel Alcazar

Asexual reproduction involves one parent and results in offspring that are genetically identical. There are six main types of asexual reproduction: sporulation, fragmentation, regeneration, binary fission, budding, and vegetative propagation. Sporulation uses spores to produce new organisms, fragmentation occurs when an organism breaks into parts that form new individuals, and regeneration allows organisms to regrow injured or lost parts. Binary fission is cell division that results in two identical daughter cells, while budding involves an outgrowth from the parent that later detaches to form a new individual. Vegetative propagation uses plant parts like bulbs, rhizomes, runners, tubers, or cuttings to generate new plants.

1 of 13
Asexual Reproduction
Reproduction • Reproduction is the capacity of all living things to give rise to new living things. • includes the transmission of hereditary material from the parent/parents. • two types – asexual beginning – sexual.
Asexual Reproduction Basics  Is the simplest form of reproduction  Occurs in plants, simple animals, bacteria, and protists  Requires one parent  Is more reliable than sexual reproduction  Doesn’t allow for any type of genetic variation
The 6 types Sporulation Fragmentation Regeneration Binary Fission Budding Vegetative propagation
Sporulation Uses spores spore is a reproductive cell that produces a new organism Spores are unicellular If conditions are right a spore will develop into a new individual They can be carried by the wind, water, or animals
Fragmentation When a organism is broken into more than one part Organism must have good regeneration abilities Create many new organisms quickly
Regeneration An organism can replace/re-grow an injured or lost part Regeneration in plants from Roots Stem leaf Regeneration in animals For simple organisms No vertebrates have this power Examples are starfish and the salamander
Binary Fission One parent dividing into two by mitosis Offspring are always genetically identical Cells may stay close together to form filaments or colonies Examples-Bacteria and Amoebas
Budding Form on part of the parent by growing an outgrowth which then detaches Example- is Hydra and Yeast Offspring will always be genetically identical to the parent
Vegetative Propagation Plant parts make new plant Reproduction is very quick Disadvantage: many plants grow close to each other 1. Bulbs – Underground stem – Surrounded by colorless leaves – Colorless leaves protect the bulb – The green leaves store the food
2. Rhizomes – Underground stem – They store food for new plant – At the end of Rhizomes nodes form 3. Runners/Stolon (strawberries) – They are above ground. – Stems – Nodes form at the end of Runners – They grow outward
4. Tuber (potatoes) – Underground stem – Stores food – The nodes eat the tuber – Potatoes have eyes / buds to make new tubers and or reproduce 5. Grafting – Surgically connecting two similar plants – Ex. Apples – Not done naturally
6. Cutting – Cutting off a stem or leaf to reproduce a new plant – Must be in wet or moist area – Combination of regeneration and fragmentation – Not done naturally 7. Stolon -

More Related Content

Asexual reproduction

  • 2. Reproduction • Reproduction is the capacity of all living things to give rise to new living things. • includes the transmission of hereditary material from the parent/parents. • two types – asexual beginning – sexual.
  • 3. Asexual Reproduction Basics  Is the simplest form of reproduction  Occurs in plants, simple animals, bacteria, and protists  Requires one parent  Is more reliable than sexual reproduction  Doesn’t allow for any type of genetic variation
  • 4. The 6 types Sporulation Fragmentation Regeneration Binary Fission Budding Vegetative propagation
  • 5. Sporulation Uses spores spore is a reproductive cell that produces a new organism Spores are unicellular If conditions are right a spore will develop into a new individual They can be carried by the wind, water, or animals
  • 6. Fragmentation When a organism is broken into more than one part Organism must have good regeneration abilities Create many new organisms quickly
  • 7. Regeneration An organism can replace/re-grow an injured or lost part Regeneration in plants from Roots Stem leaf Regeneration in animals For simple organisms No vertebrates have this power Examples are starfish and the salamander
  • 8. Binary Fission One parent dividing into two by mitosis Offspring are always genetically identical Cells may stay close together to form filaments or colonies Examples-Bacteria and Amoebas
  • 9. Budding Form on part of the parent by growing an outgrowth which then detaches Example- is Hydra and Yeast Offspring will always be genetically identical to the parent
  • 10. Vegetative Propagation Plant parts make new plant Reproduction is very quick Disadvantage: many plants grow close to each other 1. Bulbs – Underground stem – Surrounded by colorless leaves – Colorless leaves protect the bulb – The green leaves store the food
  • 11. 2. Rhizomes – Underground stem – They store food for new plant – At the end of Rhizomes nodes form 3. Runners/Stolon (strawberries) – They are above ground. – Stems – Nodes form at the end of Runners – They grow outward
  • 12. 4. Tuber (potatoes) – Underground stem – Stores food – The nodes eat the tuber – Potatoes have eyes / buds to make new tubers and or reproduce 5. Grafting – Surgically connecting two similar plants – Ex. Apples – Not done naturally
  • 13. 6. Cutting – Cutting off a stem or leaf to reproduce a new plant – Must be in wet or moist area – Combination of regeneration and fragmentation – Not done naturally 7. Stolon -