This will help anybody, who is new to flowering plant

1. SUBJECT: INTERGRATED SCIENCE
LEVEL: JHS ONE(1)
TOPIC : Life Cycle of a FLOWERING
PLANT
PREPARED BY ADAM SUMAILA
UNIVERSITY OF EDUCATION,WINNEBA
GHANA

2. OBJECTIVES
 By the end of the lesson, student should be able to :
 Identify parts of a flower
 Differentiate between the male and female parts of a
flower
 Describe the processes of pollination
 Types of pollination
 Importance of the agents of pollination
 Describe the processes of fertilization

3. FACTORS CONSIDERED FOR THE SELECTION OF
INSTRUCTIONAL MEDIA
 Objective(s) of the lesson to be taught.
 The age , level and the number of student in the class
 Learning style of the learners
 The type of learning which the learners are to be engaged in
 Practicability of the media
 Availability of the media
 Durability of the media
3

4. HOW THE MEDIA WAS PREPARED
 Planning :we planned on the subject integrated science and the
topic (flowering plant).It was prepared based on GHANA
EDUCATION SERVICE(GES) Syllabus for JHS 1
 The subject matter for the topic was discussed by the group.
 Research was made by the group by reading books and also from the
internet.
 Note was prepared on subject matter.
 Compiling, typing and insertion of prepared note and pictures.

5. HOW THE INSTRUCTIONAL MEDIA WILL BE
USED IN THE CLASSROOM
The instructional media will be used at the beginning in
the middle and the end of the class.
Preview the media or material
By using projectors and laptops
Pictures would displayed on manular cards

6. Flowering plant
 A flower is the sexual reproductive part
of a plant.
 The male part of the flower is called
stamen which consist of Anther and
Filament.
 The female part of the flower is called
pistil and consist of STIGMA, STYLE,
OVARY and OVULE.
PISTIL
STAMEN

7. The Role of Each Male Component
within the Stamen
 The Anther produces
pollen which consists of
grains containing the male
gametes (reproductive
cells).
 The Filament is the stalk
of the stamen and supports
the Anther.

8. The Role of Each Female Component
within the PISTIL
 The Stigma is a sticky surface that receives the pollen
grains during pollination.
 The Style is the stalk that connect the Stigma to the
Ovary.
 The Ovary contains the Ovule(s) and becomes the fruit.
 The Ovule carries female gametes (reproductive cells)
and become a seed after fertilization.

9. FUNCTIONS OF OTHER PARTS OF A FLOWER
 PETAL : these are usually large,
brightly coloured and often scented to
attract animal pollinators.
 SEPAL: protect other parts in the bud
and support petals
 RECEPTACLE: it carries the other
parts of the flower

10. Function of flower
 To attract pollinators with colorful petals, scent, nectar and pollen
 For beautification of the environment.
 For generating income by selling cut flowers
 For carrying out scientific studies
Carpel/

11. Pollination & Fertilization

12. What is pollination?
 Pollination: Is the transfer of mature pollen grains from
the male anther to the female stigma of a flowering
plant.

13. Types of Pollination
 Self pollination: Is transfer of mature pollen grains from the anther to the
stigma of the same flower or another flower on the same plant.
 Examples: tomato, flamboyant

14. Cross Pollination
 Cross pollination is the transfer of
pollen grains from the anther of one
flower to the stigma of another flower.
 Cross pollination is performed with
the help of an external agency.
 Example: maize, oil palm and
pawpaw

15. ADAVANTAGES OF SELF AND CROSS
POLLINATION
 SELF POLLINATION
 Self pollination does not require
any agent of pollination.
 Pollen grains are transported over
a short distance.
 CROSS POLLINATION
 Seeds produced in the case of
cross pollination are healthier
than those formed from one single
parent
 Pollen grains brought from
different flowers, brings about a
variety of seeds.

16. Agents of pollination
 Although a few plants do have self-pollination – pollen from
flower’s anther pollinating its own stigma.
 Plants generally do not transfer the pollen from one flower
to another by themselves.
 These plants need agents of pollination to help them:
 Insects (bees)
 Other animals (birds and bats)
 Wind ETC.

17. Animal pollinators: Bees
 Bees – are the most important group of flower pollinators
 They live on the nectar and feed
larvae, also eat the pollen.
 Bees are guided by sight and
smell
 See yellow and blue colors,
also ultraviolet light (not red)
 Flowers have
“honey guides”
and bee landing
platforms..

18. Butterflies and moths
 Also guided by sight and smell
 Butterflies can see red and orange
flowers
 Usually shaped as a long tube
because of insect’s
proboscis – to get nectar
 Moth-pollinated flowers
are usually white or pale,
with sweet, strong odor –
for night pollination.

19. Birds
 Birds have a good sense
of color, they like yellow or
red flowers…
 But birds do not have a good
sense of smell, so bird-pollinated
flowers usually have little odor.
 Flowers provide fluid nectar in
greater quantities.
 Pollen is large and sticky

20. Agents of pollination cont.
WIND
 Pollen grains tend to be smaller and
lighter in order to be carried by the wind.
 They have feathery stigmas, exposing large
surface area to the wind,
 Anthers shed large quantities of pollen, to
increase chances of pollination by wind.
 Filament can shake in the slightest wind
to release pollen grain to the wind
 Stigma hangs out to expose itself to pollen
grans in the wind

21. FERTILIZATION
 Fertilization is the union of the male and female sex cells to form a zygote.
 For fruits and seeds to form, male and female sex cells must meet
and fuse.
 Since male and female sex cells are involved, this is called “sexual
reproduction”.
 Unfertilized ovules cannot become seeds.
 Fertilized ovules become seeds.

22. THE FERTILIZATION PROCESS
 The pollen grains is transferred from the anther to stigma of a flower through
pollination
 The pollen grains germinate to form a pollen tube
 Pollen tube grows down the style towards embryo sac
 Tip of pollen tube breaks the sex cell enter the embryo sac through the
micropyle
 Matured male sex cell from the pollen grains fuse with the female sex cells of
the ovule to form a zygote or the embryo and the endosperm. This process is
called FERTILIZATION.

24. REFERENCES
 ‘Prof quarm’s megastar (2009) integrated science.
 Prof quarm’s megastar (ed. 2012) integrated science.
 www.buzzaboutbees.net/plant-pollination-process.html
 www.slideshare.com
 www.flowerstructurepollinationfertilization-111205102558-phpapp01
 www.lec13pollination-141007081446-conversion-gate01_2