Be able to identify and explain the functions of these floral parts in the diagram above.
Dissect your class flower and identify these parts and sketch.
Study the diagram below and then study the diagram and slide pictures.
Cells and Nuclei - Two Cell and Four Cell Stage
Fomation of Pollen
Mature Pollen with Nuclei
Pollen moving toward ovule Bud formation
Web resources : http://www.lima.ohio-state.edu/biology/flowers.html
Text references : Chapter 36 in Purves,Orians,Heller, and Sadava- Reproduction in flowering plants.
Objective : To study plant cell meiosis in the lily by using computer images and slides in the laboratory. To study and compare floral types.
Picture from - Biology Coloring Book. Color and define key words below.
Color code your pictures. Use the Key below.
Key words ( see the list above )
To draw the steps in lily meiosis from the class portfolio set, Internet references, or microscope slides during class.
To be able to identify and differentiate the steps in the development of pollen and the egg
To be able to identify steps in this process.
One celled microspore
mature pollen grains
Megaspore mother cell
1. How does the formation of the male gamete in plants differ from spermatogenesis in animals?
2. Explain the significance of the egg nucleus, the polar nuclei, and the synergids?
3. What is the purpose of double fertilization?