This document provides an instructional media on the life cycle of flowering plants for junior high school students in Ghana. It defines key terms like pollination and fertilization and describes the male and female parts of flowers. It explains the processes of pollination, including self-pollination and cross-pollination, and the roles of different pollinators like bees, birds, bats, and wind. Diagrams and pictures are included to illustrate these concepts. The document also discusses how this instructional media will be used in the classroom, such as with projectors and printed materials.

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