Asexual Reproduction
#Science
What is the product of asexual reproduction?
Asexual reproduction, one parent copies itself.
Are the offspring different to their parents?
The new individuals produced are: genetically and physically identical to each other, i.e., they are
the clones of their parents.
Which types of organisms produce asexually?
Asexual reproduction is observed in both multicellular and unicellular organisms.
Are gametes needed?
No gametes needed (egg and sperm cells), therefore no fusion
Are there different types of asexual reproduction and name them?
Different types of asexual reproduction.
Parthenogenesis
Parthenogenesis - is a natural form of asexual reproduction in which embryos develop in the
absence of fertilization. Bees do this when producing drones (male bees)
Organisms the produce by parthenogenesis
some insects
some fish
some amphibians
some reptiles
Benefits of Parthenogenesis
saves time and energy. A female that reproduces using parthenogenesis has no need for a
male; her eggs develop into clones.
increases population size
helps favorable genes
favours population expansion
Sporulation
Sporulation - asexual reproduction takes place by the production of spores. Spores are typically
one-celled, microscopic and are reproductive units capable of giving rise to a new individual
without sexual fusion...
Organisms that produce by sporulation
, bacteria
fungi
algae
plants
Benefits of sporulation
increased survival rate
enhanced dispersal
preservation of genetic material
Budding
Budding - In this process, a new organisms is developed from a small part of the parent's body. A
bud which is formed detaches to develop into a new organism, flatworms, jellyfish undergo
budding.
Organisms that produce by budding
jellyfish
flatworms
corals
yeast
bacteria
Benefits of Budding
the population can increase rapidly when the conditions are favorable
only one parent is needed
it is more time and energy efficient as you don't need a mate
it is faster than sexual reproduction
Binary Fission
Binary Fission - Separation of the body into two new bodies. The organism duplicates its genetic
material (NDA) then divides giving each offspring a set of the identical DNA.
Organisms that produce by binary fission
archaea
cyanobacteria
certain protozoa e.g. amoeba
Benefits of binary fission
quick reproduction
single parent
, daughter cells exact copy of the parent
Regeneration
Regeneration - process in which the organism is capable of regrowing certain body parts.
Regeneration occurs via mitosis.
Examples of regeneration:
lizards can regenerate their tails
star fish can regenerate their arms
humans have the ability to regenerate their liver to a certain extent
Benefits of regeneration
allows plants and animals to replace or restore damaged or missing cells, tissues, organs, and
even entire body parts of full function
Vegetative Propagation
Vegetative Propagation - process in which new plants are grown from the old parts of another
plant like roots, shoots, and leaves, without involving any reproductive organ
Examples of natural vegetative propagation:
Stem - runners grow horizontally above the ground
Roots - new plants emerge out of swollen, modified roots known as tubers
Leaves - leaves of a few plants get detached from the parent plant and develop into new plants
Benefits of vegetative propagation
quicker and more certain
produces identical quality as the parent
plants that do not have viable seed, can be reproduced
desirable character of fruit can be maintained
#Science
What is the product of asexual reproduction?
Asexual reproduction, one parent copies itself.
Are the offspring different to their parents?
The new individuals produced are: genetically and physically identical to each other, i.e., they are
the clones of their parents.
Which types of organisms produce asexually?
Asexual reproduction is observed in both multicellular and unicellular organisms.
Are gametes needed?
No gametes needed (egg and sperm cells), therefore no fusion
Are there different types of asexual reproduction and name them?
Different types of asexual reproduction.
Parthenogenesis
Parthenogenesis - is a natural form of asexual reproduction in which embryos develop in the
absence of fertilization. Bees do this when producing drones (male bees)
Organisms the produce by parthenogenesis
some insects
some fish
some amphibians
some reptiles
Benefits of Parthenogenesis
saves time and energy. A female that reproduces using parthenogenesis has no need for a
male; her eggs develop into clones.
increases population size
helps favorable genes
favours population expansion
Sporulation
Sporulation - asexual reproduction takes place by the production of spores. Spores are typically
one-celled, microscopic and are reproductive units capable of giving rise to a new individual
without sexual fusion...
Organisms that produce by sporulation
, bacteria
fungi
algae
plants
Benefits of sporulation
increased survival rate
enhanced dispersal
preservation of genetic material
Budding
Budding - In this process, a new organisms is developed from a small part of the parent's body. A
bud which is formed detaches to develop into a new organism, flatworms, jellyfish undergo
budding.
Organisms that produce by budding
jellyfish
flatworms
corals
yeast
bacteria
Benefits of Budding
the population can increase rapidly when the conditions are favorable
only one parent is needed
it is more time and energy efficient as you don't need a mate
it is faster than sexual reproduction
Binary Fission
Binary Fission - Separation of the body into two new bodies. The organism duplicates its genetic
material (NDA) then divides giving each offspring a set of the identical DNA.
Organisms that produce by binary fission
archaea
cyanobacteria
certain protozoa e.g. amoeba
Benefits of binary fission
quick reproduction
single parent
, daughter cells exact copy of the parent
Regeneration
Regeneration - process in which the organism is capable of regrowing certain body parts.
Regeneration occurs via mitosis.
Examples of regeneration:
lizards can regenerate their tails
star fish can regenerate their arms
humans have the ability to regenerate their liver to a certain extent
Benefits of regeneration
allows plants and animals to replace or restore damaged or missing cells, tissues, organs, and
even entire body parts of full function
Vegetative Propagation
Vegetative Propagation - process in which new plants are grown from the old parts of another
plant like roots, shoots, and leaves, without involving any reproductive organ
Examples of natural vegetative propagation:
Stem - runners grow horizontally above the ground
Roots - new plants emerge out of swollen, modified roots known as tubers
Leaves - leaves of a few plants get detached from the parent plant and develop into new plants
Benefits of vegetative propagation
quicker and more certain
produces identical quality as the parent
plants that do not have viable seed, can be reproduced
desirable character of fruit can be maintained
