The Green Machine I CH 13 Flashcards
What are 10 reasons to thank plants?
- Food. 2. Shelter
- Erosion control. 4.Medicines
- Commercial products. 6. Timber
- Paper. 8. Shade
- Oxygen. 10. Filtration
To conquer land, what sort of adaptations did early land plants have to developed?
Evolve to form mechanisms preventing desiccation, roots that will anchor them, transport water with nutrients, and a means of propagation.
Which of the following statements correctly distinguish non vascular and vascular plants?
1. No vascular plants lack vascular tissue; vascular plants have specialized tissue for conducting water and nutrients within the plant.
2. Non vascular plants lack true roots, stems and leaves; vascular plants have true roots, stems, and leaves.
3. Vascular plants are divided into seeded and seedless plants with club moss and ferns being examples of seeded plants; non vascular plants are the liverworts, true mosses, and hornworts.
4. Both 1 and 2
5. All of the above
5.
What is true about non vascular plants?
1. They lack specialized conducting tissue for transport of water and nutrients.
2. They lack true roots, stems, and leaves.
3. The sporophyte generation is dominant.
4. Both 1 and 2
5. All of the above
4.
Which of the following is not classified as a phylum of seedless vascular plants?
1. Psilophyta
2. Bryophyta
3. Lycophyta
4. Sphenophyta
5. Both 2 and 3
2.
Distinguish between the sporophyte and the gametophyte generation in seedless vascular plants, making sure to discuss structure and ploidy.
Diploid sporophyte alternates w/ haploid gametophyte phase. Diploid sporophyte is dominant phase while gametophyte is inconspicuous & the independent organism. Seedless reproduce through unicellular haploid spores dispersed through the air. Spores contain vascular tissue & do not produce flowers or seeds. Depend on water during fertilization as sperm swim on layers of moisture to reach an egg.
