BIO 193
SI Leader: Bazla Sukhera
General Alternation of Generation Flow Chart: KEY
Fill out the flow chart using the following processes: mitosis, meiosis, and fertilization.
*Note: Non-vascular, seedless vascular, gymnosperms, and angiosperms all exhibit
“alteration of generation.”
The gametophyte generation is __________________. (haploid/diploid)
The sporophyte generation is ___________________. (haploid/diploid)
List the structures that are part of the gametophyte generation.
1. spores
2. gametophyte
3. gametes
List the structures that are part of the sporophyte generation.
1. zygote
2. sporophyte
What kind of plant is a moss? Non-vascular, seedless vascular, gymnosperms, or
angiosperms? Non-vascular
BIO 193
SI Leader: Bazla Sukhera
What kind of plant is a fern? Non-vascular, seedless vascular, gymnosperms, or
angiosperms? Seedless vascular
Non-Vascular Plants:
List 3 major characteristics of non-vascular plants.
1. low growing
2. sporophyte nutritionally depends on gametophyte
3. sperm have flagella
List the 3 phyla of non-vascular plants:
1. hepatophyta
2. anthocerophyta
3. bryophyte
BIO 193
SI Leader: Bazla Sukhera
Seedless Vascular Plants:
List 4 major characteristics of seedless vascular plants:
1. have vascular tissue
2. taller
3. sporophyte is independent of gametophyte
4. sperm have flagella
List the 2 phyla of seedless vascular plants:
1. pterophyta
2. lycophyta
What are some differences between the moss and fern life cycles regarding the
gametophyte and sporophyte generation? (Hint: Which is dominant in each plant?)
Nonvascular: gametophyte is dominant and sporophyte depends on the gametophyte for
nutrition
Seedless vascular: sporophyte is dominant and independent of gametophyte
What is one thing that non-vascular and seedless vascular plants have in common?
Sperm have flagella
BIO 193
SI Leader: Bazla Sukhera