What Can Be Derived from Seed Plants

Ch 30 1. If you were collecting pine cones from the bottom edge of a pine tree, the pine cones would most likely be • Male. 1. Produce Pollen 2. Tend to grow on lower branches 2. In most angiosperms, meiosis of the megaspore mother cell produces four megaspores and • Three of them disappear. 1. only one megaspore is selected to develop into the functional megagametophyte 3. What can be derived from seed plants? • Food • Fuels • Building materials • Pharmaceuticals 4. During the evolution of seed plants, the size of the gametophyte has • Decreased. 1. A gametophyte is the sexual phase in the life cycle of plants and algae that produces gametes (sperm and eggs) through mitosis. 5. What distinguishes the gymnosperms from the pterophytes? • Seeds 1. by the presence of seeds. 6. All of the greater than 100 species of pines that exist today are native to • The northern hemisphere. 1. Favorable climate 7. In pines, pollen is typically moved from male to female cones by • Wind. 8. What can stimulate seed germination in angiosperms? • Passage through an animal digestive tract • Exposure to fire • A heavy rainfall 9. What was an "abominable mystery" to Darwin? • The origin of angiosperms 10. What distinguishes the gymnosperms from the pterophytes? • Seeds 11. What was puzzling to Darwin about angiosperms? • Their rapid diversification 12. The structure within the circle is a megaspore mother cell, which is Blank______. • Haploid 13. The embryo sac of an angiosperm contains • 8 nuclei in 7 cells. 14. Microspore production occurs in the • Anthers. 15. The integuments of the ovule develop into the • Seed coat 16. What distinguishes the gymnosperms from the pterophytes? • Seeds 17. Select all ways in which seeds are dispersed: • Soil • Animals • Wind • Water 18. If the stigma of an angiosperm flower is receptive to pollination, a • Pollen tube 19. During the evolution of seed plants, the size of the gametophyte has • Decreased. 20. Firs, cedars, cypresses, spruces, and pines are all members of what phylum? • Coniferophyta. 1. a division of plants within the gymnosperms that includes species such as pines, spruces, firs, and cedars. 21. All of the greater than 100 species of pines that exist today are native to • The northern hemisphere. 22. In pines, pollen is typically moved from male to female cones by • Wind. 23. Within the ovule of seed plants, meiosis occurs in the • Megasporangium 1. an organ in plants that produces megaspores 24. Sperm reaches the archegonia via • A pollen tube 25. Cycads look like palm trees, but differ from them because they • Do not produce flowers. • Have a multicellular gametophyte.