Plants can reproduce in 2
ways
 Asexual
reproduction
 Sexual reproduction
Asexual reproduction
 One
cell can split into two, giving you two
identical cells. That type is asexual
reproduction
 The
offspring is genetically identical to
parent
 Binary
fission
 Vegetative
 Formation
reproduction
of hapliod spores
Advantages
 No
advantage over others
 Single
individuals can increase population
 Numerous
 Most
offspring in short periods of time
advantageous form of reproduction
in a stable environment
Disadvantages
 Cannot
 All
adapt to changing environment
individuals are equally susceptible to
adverse environmental conditions
Methods of asexual
reproduction
 Binary
fission
mainly unicellular organisms
 Vegetative
growth
Fragmentation of parent
 Formation
Growth
of spores
Sexual reproduction

when two cells, each with half of the DNA
needed, combine and create a living cell.

Combines the genetic material of organisms

Occurs in eukaryotes

Gametes are needed

Offspring is slightly different from parent
Advantages
 Gametes
make
 Genetic
are small and inexpensive to
variation
Disadvantages

Needs 2 individuals

Individuals must be able to produce
complementary gametes

Gamete production must occur at same time

Isolated individuals cannot reproduce

Male gametes must reach female gametes
 There
are two main processes during
sexual reproduction in eukaryotes:
meiosis, involving the halving of the
number of chromosomes;
 and
fertilization, involving the fusion of two
gametes and the restoration of the
original number of chromosomes
Gametes
Three types
 Isogamy
It means union of gametes that are identical in all
respect ; so much so that it is not possible to label
them as 'male ' and 'female ' gamete '
 Anisogamy
two uniting gametes are different from each other
some how and therefore can labeled as male and
female.
 Oogamy
two uniting gametes are distinctingly
dissimilar and easy to spot as such .
Generations in life cycles
Life Cycle
of Mosses