Reproduction
a sexual
reproduction : one parent produces genetically similar
organisms .
1.
Binary fission :
O-8
My
.
2
Fragmentation i :
Cbudding) y
two
sexual reproduction :
parents produce genetically unique
organisms .
↳ haploid sperm + haploid egg
↳ Form diploid (2n) zygote
of sexual
Advantages of sexual .
rep Disadvantages .
rep
1 . Genetic
diversity
I
energy + time consumption
2 .
Disease resistance .
2 Less offspring
3 . Survival advantage 3 ·
Finding a mate
4
. Genetic risks
4 .
Repair genetic defects
of
Advantages of asexual
rep Disadvantages asexual
1 .
Can't edapt .
one
parent rep
.
1
2 .
overpopulation
2 .
Rapid growth .
3 Vulnerable to disease
3 .
No need for mate
n . More
offspring
, Flowering Plant -
angiosperm
3) attract pollinators
Perionth (arprel)
7
Pollination
↳ transfer of ripe pollen from anther to
-> fertilisation
stigma
↳ food
production of + seeds
pollen lands
Self-pollination flower
1
: SAME Plant or on Stigma
2 pollen
DIFFERENT Plants
Cross-pollination : tube develops
After fertilisation :
3 .
pollen
tube carries
to ovule
o gametes
crule >
-
seed fertilised
:
,
mature ovule
that contains an embryonic
GGembryo plant, stored material +
-seedt
seed coat
important food source
-
fuses
5
.
one
gamete
ovary >
-
fruit keeps seed
: safe 4
. release
with female
other fuses with
gamete
of gametes into
-
disperse seeds
ovule
polar nuclei
>
endosperm
-
a sexual
reproduction : one parent produces genetically similar
organisms .
1.
Binary fission :
O-8
My
.
2
Fragmentation i :
Cbudding) y
two
sexual reproduction :
parents produce genetically unique
organisms .
↳ haploid sperm + haploid egg
↳ Form diploid (2n) zygote
of sexual
Advantages of sexual .
rep Disadvantages .
rep
1 . Genetic
diversity
I
energy + time consumption
2 .
Disease resistance .
2 Less offspring
3 . Survival advantage 3 ·
Finding a mate
4
. Genetic risks
4 .
Repair genetic defects
of
Advantages of asexual
rep Disadvantages asexual
1 .
Can't edapt .
one
parent rep
.
1
2 .
overpopulation
2 .
Rapid growth .
3 Vulnerable to disease
3 .
No need for mate
n . More
offspring
, Flowering Plant -
angiosperm
3) attract pollinators
Perionth (arprel)
7
Pollination
↳ transfer of ripe pollen from anther to
-> fertilisation
stigma
↳ food
production of + seeds
pollen lands
Self-pollination flower
1
: SAME Plant or on Stigma
2 pollen
DIFFERENT Plants
Cross-pollination : tube develops
After fertilisation :
3 .
pollen
tube carries
to ovule
o gametes
crule >
-
seed fertilised
:
,
mature ovule
that contains an embryonic
GGembryo plant, stored material +
-seedt
seed coat
important food source
-
fuses
5
.
one
gamete
ovary >
-
fruit keeps seed
: safe 4
. release
with female
other fuses with
gamete
of gametes into
-
disperse seeds
ovule
polar nuclei
>
endosperm
-
