Biology 1A Nov 19, 1998
Lecture 22 - Angiosperms
Page Contents :
Overview of Lecture:
What is an angiosperm?
The angiosperm life cycle.
Monocots and Dicots.
I. What is an angiosperm?
II. The angiosperm life cycle.
III. Monocots and Dicots.
angiosperm gymnosperm pollen tube
anther integument seed coat
antipodal cells megagametophyte self-incompatibility
cotyledon microsporangium stamen
dicot monocot stigma
endosperm ovary style
flower ovule synergids
fruit pistil tapetum
funiculus polar nuclei triploid
generative cell pollen tube cell
- How many species of flowering plants are there? How does this compare to other plant groups?
- How are angiosperms different from other seed plants? If they are so different, then why are they still considered seed plants?
- Where is angiosperm pollen produced? Describe the internal structure of the pollen grain.
- We have noticed before that pollination and fertilization are not the same. In flowering plants, what must happen after pollination for fertilization to occur? What role does the tube nucleus play in this process?
- How are the spem produced in an angiosperm microgametophyte? How many are produced by a single microgametophyte? What happens to each sperm?
- Describe and draw the structure of the angiosperm megagametophyte (female GPT).
- What is the function of the synergids? of the polar nuclei?
- Describe the structure of the angiosperm pistil. What are its three components, and what role does each play in angiosperm sexual reproduction?
- How are monocots and dicots different? (You should be able to list many ways)
- How are monocots and dicots similar?
- What is the ploidy of endosperm? Where does it come from?
© 1998 Brian R. Speer. These pages for the personal use of students and teachers; any commercial use or publication is strictly prohibited.