Angiosperms: Chapter 19 1. Diversity in the Phylum Anthophyta; List some of the
ID: 61488 • Letter: A
Question
Angiosperms: Chapter 19
1. Diversity in the Phylum Anthophyta;
List some of the types of plants found in the phylum Anthophyta.
2. The Flower
Draw and label the parts a typical perfect, complete monocot flower (e.g., lily).
3. The Flower
What is a carpel? Name the three parts of the carpel, and give the function of each.
4. The Flower
Can an incomplete flower be a perfect flower? Why or why not?
5. The Angiosperm Life Cycle
Summarize the events of microsporogenesis and microgametogenesis in angiosperms.
7. The Angiosperm Life Cycle
How would you distinguish a microspore from a pollen grain?
8. The Angiosperm Life Cycle
Summarize the main events of megasporogenesis and megagametogenesis in angiosperms.
9. The Angiosperm Life Cycle
List the cells and nuclei that compose the eight-nucleate, 7-celled embryo sac, and explain the eventual fate of each.
10. The Angiosperm Life Cycle
Describe the two fertilization events of “double fertilization.”
11. The Angiosperm Life Cycle
What is triple fusion in angiosperms? Name the product formed in triple fusion. What is the function of this product?
Angiosperms: Chapter 19
1. Diversity in the Phylum Anthophyta;
List some of the types of plants found in the phylum Anthophyta.
2. The Flower
Draw and label the parts a typical perfect, complete monocot flower (e.g., lily).
3. The Flower
What is a carpel? Name the three parts of the carpel, and give the function of each.
4. The Flower
Can an incomplete flower be a perfect flower? Why or why not?
5. The Angiosperm Life Cycle
Summarize the events of microsporogenesis and microgametogenesis in angiosperms.
7. The Angiosperm Life Cycle
How would you distinguish a microspore from a pollen grain?
8. The Angiosperm Life Cycle
Summarize the main events of megasporogenesis and megagametogenesis in angiosperms.
9. The Angiosperm Life Cycle
List the cells and nuclei that compose the eight-nucleate, 7-celled embryo sac, and explain the eventual fate of each.
10. The Angiosperm Life Cycle
Describe the two fertilization events of “double fertilization.”
11. The Angiosperm Life Cycle
What is triple fusion in angiosperms? Name the product formed in triple fusion. What is the function of this product?
Explanation / Answer
1. Amborella, Wolfiella, Zostera, Naias, Potamogeton, Ultricularia, Peperomia, and Numphaea, oaktrees, grasses, roses,
Microscopic aquatic plants - Wolfiella
Eelgrass - Zostera
Fresh water aquatics - Phyllospadeix, Utricularia, Nymphea
Xerophytes - Cacti, Agaves
Climbing plants: Orchids,
Saprophytes - MOnotropa
3. Carpel: Innermost part of a flower, surrounded by male reporductive structures called stamesn; altogether, they are surrounded by petals. Flower can have one or more carpels. Together, all the carpels are called Gynoecium. A carpel has three structures; A stigma, a style, and the ovary.
Stigma: the top, sticky portion of the carpel, and is location of pollination
Style: a long tube, connects stigma to ovary. They transport pollen grains to ovary.
Ovary: Enlarged basal portion which contain placenta. Ridges of tissues beare one or more ovules, which devleop in locule.
4. An incomplete flower means some of the important parts is missing. Imperfect flower lacks either pistils or stamens. If any of the functional part is missing, imperfect flower cannot fertilize
5. MIcrosporangium -------- Microspore mother cells (2n) ------ Meiosis ------ Microspores (n)--------Mitosis ------- Generative cell (Male gametophyte) ------ Pollen grains (microgametophytes)
7. MIcrospore mother cells are diploid, they form four haploid microspores. Microspore does not have Exine layer around it, whereas pollen grains have it. Microspore is one celled, whereas pollen grains are two to three celled.
8. Megasporocyte mother cell (2n) ----- Meiosis I ---------- Meiosis II ------ four haploid daughter cells (1n cells) ---------- Megaspore ------ Mitosis 1 --------Mitosis 2 -------- Mitosis 3 -------- Megagametophyte -------- cytoplasmic division --------- Egg cell