Objectives: Name ____________________
To learn the parts of the flower.
To compare male and female anatomy
To determine if the male or female parts are longer
and what advantage that might have in fertilization.
1. You and your partner will be given one flower.
2. In Figure 1, draw your flower. Label the sepals and petals.
3. CAREFULLY open your flower to expose the inner parts.
4. In Figure 2, draw your flower open. Be sure to label: Sepals, Anther,
Stamen, Filament, Stigma, Style, Ovary, & Pistil (carpal)
5. Using your ruler, measure the length of the Pistil (stigma, style, & ovary) in mm.
Length = ___________mm
6. How many stamen does your flower have? Number of stamen _________
7. Measure the length of a Filaments only (mm). Length = ________ mm
8. Measure the length of an Anther only (mm). Length = ____________mm
The anthers may be releasing pollen. Look for a powdery residue. Make a slide of the
pollen, observe under microscope, and draw a pollen grain. (If no pollen, get some from
9. Cut open the ovary. See if you can find the ovules. When fertilized, these will
become seeds. Look at the ovules under the stereoscope and draw a picture of the ovules
in the ovary.
Ovules in ovary
10. Tape and label all of the flower parts on to a sheet of paper.
1. Name the female parts of your flower.
2. Name the male parts of your flower.
3. In your flower, which was longer (male or female parts…use the correct term)?
4. Was your flower mature? (open or closed)
5. Was your flower releasing pollen? How could you tell?
6. Why would having a longer pistil or stamen be an advantage in pollination?
7. Was your flower a monocot or a dicot? How do you know?
Conclusion: Use your book and brain to answer the following questions.
1. What is the purpose of bright colors and sweet smell of flowers?
2. Describe how pollination occurs in flowering plants. Be specific and complete.
3. Explain why it is important for cross-pollination to occur?
4. What would happen to Angiosperms if animals were no longer present? Explain.
5. Describe the process of reproduction in flowering plants.