1. ASEXUAL
REPRODUCTION
2012

2. Asexual Reproduction
► Produces IDENTICAL OFFSPRING
► Who: unicellular organisms, simple
animals, many plants( at some point)
► Asexual reproduction:
►Binary Fission
► Budding
► Spore Formation
► Regeneration
►Vegetative Propagation

3. Binary Fission

4. Binary Fission
► Simplest form
► Parent divides into two equal portions.
► New cells: DAUGHTER CELLS
► Smaller first…grow to normal size
► WHO:
 Bacteria(prokaryotic Mitosis)
 Protozoa: Ameba and Paramecium

6. Budding
► Parentorganism divide into 2
UNEQUAL parts
► New Individuals develop as
outgrowths or “buds”
► May separate or remain attached.
► Who:
 Yeast and Hydra, Sponges(Porifera) and
some Worms.

9. Spore Formation

10. Spore
► Spores: single specialized cells that
when released from PARENT CELLS
can GERMINATE to form new
individuals
► Some spores have hard outer covering
► Some spores have Flagella
► WHO:
 Fungi, Algae, Protozoa

11. Spore Formation

12. Regeneration

13. Regeneration
►Regrowthof lost body parts
►WHO: simple animals:
►Hydra, planarian, starfish, and
earthworm.

14. Animals and Parts Regenerated
Crayfish: claws, ganglia
Crabs: claws
Newts: tails, limbs, jaws, organs, eye
Planaria: whole animal regenerates
Lizards: tail, liver
Rabbits and Guinea pigs: skull bones
Dogs: teeth
Fish: brain
Frogs: brain and cerebellum

15. Vegetative Propagation
► VEGETATIVE PROPAGATION
► One part of plant gives rise to new one
► Roots, Stems, or Leaves
► Includes:
 Natural
 Bulb
 Tuber
 Runner
 Rhizome
 Corm
 Artificial
 Cutting
 Layering
 Grafting

16. Bulbs
►: Underground
stem/leaves:
► ONION, LILY,
TULIP

17. Tuber
►A modified
underground stem
produced at the
tip of a rhizome.
► The "eyes" of the
potato are actually
buds.

18. Runner
► stem that
grows
sideways
along the
surface
► Strawberry,
grass

19. Rhizome
► stem that grows
sideways
underground
► fern, iris, water
lilies

20. Corm
► Short, thickened
underground stem,
usually covered with
papery (dry) leaves.
► Corms serve as organs
of food storage and in
some plants ( crocus and
gladiolus) of asexual
reproduction.
► they are often mistaken
for bulbs.

21. ARTIFICIAL
VEGETATIVE
REPRODUCTION
► Techniques to allow plants to be grown with
desirable traits.

22. Plant Cutting
► stem, leaf or root:
cut and dipped in
hormones to
encourage growth.
► Stem – roses
► Leaves – coleus
► Root – sweet
potato

23. Plant Layering
► stem bent to be
covered by
soil...covered part
forms roots
► raspberries,
roses.

24. Plant Grafting
► stem or bud
from one
plant (stock)
joined to
another part
(scion) at the
growing
regions