13 Jun BIO 112:Plants -Alternating Generations and Reproduction
Question
BIO 112:Plants -Alternating Generations and Reproduction
Directions: Complete the following and answer all questions in complete sentences. Be sure to have answers in bold and a different color
1. What is meant by the phrase alternation of generations?
2. Complete Table 1(at the bottom of the page) as follows:
Column 1: Define/describe each of the listed structures.
Column 2: Indicate whether the structure is haploid or diploid.
Column 3: Indicate which of the other structures is produced by the one listed.
Column 4: Indicate the process (mitosis, meiosis, or fertilization) by which the subsequent structure is produced.
3. In which plants–mosses, ferns, gymnosperms, and/or angiosperms–is the gametophyte generation dominant (i.e., the most recognizable form)? Where is the sporophyte found in these plants?
4. In which plants–mosses, ferns, gymnosperms, and/or angiosperms–is the sporophyte generation dominant (i.e., the most recognizable form)? Where is the gametophyte found in these plants?
5. Unlike simple plants, such as mosses, higher plants produce two kinds of spores. What are the two types of spores produced by higher plants and how do they differ from each other?
Flower Power
6. What are the male parts of the flower? What are the female parts of the flower?
7. Where is pollen produced? Where are the ova produced?
8. What are the functions of the other parts (petals and stamens) of the flower?
9. Where is the male gametophyte found? Where is the female gametophyte found?
10. Summarize the process by which the male and female gametes are brought together. Why is this process referred to as double fertilization?
Table 1
Structure
Haploid/Diploid
Structure Produced
Process
gametophyte
sporophyte
zygote
spore
gamete
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