1. Use the following to label the flower diagram below:
Style, stamen, sepal, filament, peduncle, ovary, anther, receptacle, carpel, stigma, petal, ovule.

2. Structure and Function of the Flower
Biology
Life Processes

3. Section A: Flower Structure
Science Objectives:
Students should be able to
Recognize specified floral parts on most flowers
Relate each part to its function
Distinguish between staminate, pistillate/carpellate and hermaphrodite flowers
Core Skills Objectives:
Co-operation/Group work
Drawing
CXC Practical Skills

4. What is a Flower? Plant organ for sexual reproduction
Flowers produce gametes (sex cells)
Flowers are necessary for fertilisation to occur

5. Flower Diagram

6. Parts of the Flower Peduncle: flower stalk
Receptacle: part of stalk bearing the floral organs, at base of flower
Sepal:leaflike structures at flower base, protects young flower bud
Calyx: all the sepals together form the calyx
Petal: located inside and above the sepals, often large and colourful, sometimes scented, sometimes producing nectar
Stamen: male part of the flower, consist of the anther and filament, makes pollen grains
Pollen: grains containing the male gametes
Pistil/Carpel: female part of the flower, consist of the stigma, style and ovary
Ovule: located in the ovaries, carry female gametes
Staminate flower: flower bearing only male parts
Pistillate/Carpellate flower: flower bearing only female sex parts
Hermaphrodite flower: flower bearing both male and female sex parts

7. Mode of Pollination Insect-pollinated flowers may have:
Brightly coloured petals
Strong sweet fragrance
Nectar producing glands
Guidelines to lead insects to Nectar
Wind-pollinated flowers may have:
Large stigmas outside the flower
Little or no fragrance
Light non-sticky pollen
Lack showy petals
Bird-pollinated flowers may have:
Long tube shaped flowers
Bright red and yellow flowers
No odour

8. Mode of Pollination (Continued)
Mammal-pollinated flowers may have:
White flowers
Strong fruity odour
Flowers opening at night
Water-pollinated flowers may have:
Pollen which floats on water
(this form of pollination is rare)

9. Structure and Function of the Flower Quiz #1
What is the male part of the flower called?
What is the main function of a flower?
What is the function of the carpel?
Give one example of a hermaphrodite flower
Name the flower structures which protect the young flower bud.

12. Method Collect specimens of two different flowers
Make a labeled drawing of the individual flowers (use the flower diagram as a guide, include magnification, labels in script)
Dissect a flower ( a demonstration will be given)
Make individual drawings of the petals, sepals, stamens, and pistils/carpels
Dissect the pistil/carpel and make a labeled drawing of the ovary and the ovules lying within it

13. Let’s elaborate Collect/ find two flower specimens.
2. Draw the first specimen in detail, making sure to draw each part of the organism.
3. Label each part of the organism that is visible without taking apart the flower.
4. Write a sentence using a sentence frame about each of the parts.

14. Let’s elaborate
5.After you have labeled each part, dissect (or take apart by hand) the flower to locate the inner parts. 
6. Label each inner part of the flower organism. 
7. Write a sentence using a sentence frame about each inner part.

15. Assessment Scheme for Drawing
Element
Criteria
Sub-Total
Total
Clarity
Clean continuous lines of even thickness
Any 3=2
No shading or unnecessary detail
2 marks
Reasonable size
Any 2=1
Accuracy
Faithfulness of reproduction 1
Structures typical of specimen included
3 marks
Reasonable proportions
Labeling/
Labeling lines
Neat drawn with a ruler; in pencil; not crossing
No arrowheads; touching labeled structure
Labels in script
Labels accurate
1 mark
Acceptable title
Accurate description of specimen
In caps
Below drawing
Magnification
10 marks

16. Structure and Function of the Flower Quiz #2 Pollination
Write a short definition for the word pollination.
Why is pollination important to plants?
State three ways in which pollination can be achieved.
State a plant adaptation associated with each mode of pollination above

17. Use the following to label the flower diagram below:
Style, stamen, sepal, filament, peduncle, ovary, anther, receptacle, carpel, stigma, petal, ovule.