Asexual reproduction
Process which results in genetically identical offspring from parent
Sexual reproduction
Process that involves fusion of nuclei of two gametes to form a zygote where the offspring is genetically different from parent
Select the advantages of asexual reproduction
Select the disadvantages of asexual reproduction
The advantages of sexual reproduction
The disadvantages of sexual reproduction
need two parents
need fusion of gametes
so it is a slower process
wastage of pollen and energy
offspring with unfavourable genetic cannot survive
Fertilisation
Fusion of nucleus of two gametes
Life stages of plant
Seed > matured plant > pollination > fertilisation> seed dispersal > germination with flower
A - stamen
B - anther
C - petal
E - filament
F - sepal
G - stigma
H - style
I - ovary
J - ovule
K - carpel
stigmas
ovary
filament
stamen
bract
What type of flower has large, scented, brightly colored petals with a nectar guide to attract insects?
Which flower adaptation includes having an anther that dangles loosely outside the flower?
What type of flower has a feathery stigma to catch pollen carried by the wind?
Which flower adaptation involves having a rough surface with spikes on the pollen to attach to an insect's body?
In which type of flower is the surface of pollen smooth and lightweight to be carried away by the wind?
What is pollination?
What is cross-pollination?
Transfer of pollen grains from the anther of a flower to the stigma of a different flower
What is self pollination?
Transfer of pollen grains from the anther of a flower to the stigma of the same flower, or a different flower on the same plant
Advantages of self - pollinated flower
- Only 1 parent is needed.
- Good characterístics of one parent
is passed down to oftspring.
- Does not depend on pallinating agents
- can happen when flower is closed
- Probability of successful pollination
is higher
- Less pallen and energy is wasted
Advantages
Last changed9 months ago
