Transcript 22.4 Asexual Reproduction TEKS 10B

22.4 Asexual Reproduction
The student is expected to:
10B describe the interactions
that occur among systems that
perform the functions of
transport, reproduction, and
response in plants
TEKS 10B
22.4 Asexual Reproduction
TEKS 10B
KEY CONCEPT
Plants can produce genetic clones of themselves
through asexual reproduction.
22.4 Asexual Reproduction
TEKS 10B
Plants can reproduce asexually with stems, leaves, or
roots.
• Asexual reproduction allows a plant to make copies of itself.
• Regeneration is one type of asexual reproduction.
– plants grow a new individual from fragment of parent
– occurs when piece of a stem, leaf, or root falls off parent
plant
22.4 Asexual Reproduction
• Vegetative reproduction is another type of asexual
reproduction.
– stems, leaves, or roots
attached to parent plant
produce new individuals
– specific adaptations
include stolons, rhizomes,
and tubers
TEKS 10B
22.4 Asexual Reproduction
TEKS 10B
Vegetative Reproduction: asexual reproduction in
which stems, leaves, or roots attached to the parent
plant produce new individuals
• Stolons: stems that grow horizontally along the ground
that produce roots and leaves at certain points
(strawberries)
• Rhizomes: stems that grow horizontally underground
that produce new plants/buds at certain points (irises)
• Tubers: underground stem modified for storage that can
produce new plants from buds (Potatoes)
• Bulbs: underground stem surrounded by modified
leaves adapted for storage that can divide to produce
new plants (tulips)
22.4 Asexual Reproduction
TEKS 10B
Humans can produce plants with desirable traits using
vegetative structures.
• Vegetative propagation takes advantage of plants’ ability to
reproduce asexually.
• Humans use one plant with desirable traits to produce
many individuals.
– cutting a fragment cut from a leaf or stem may be put in
soil or water to form a new
individual (African violets)
– grafting joins the parts of
two plants together to form
a hybrid plant with
desirable traits (frost
tolerance, disease
resistance, etc.