<p>Worksheet 6: Leader: Courtney Grula Protists/Plants Answers Course: Bio 211 (4) Supplemental Instruction Instructor: Boury Iowa State University Date: 9/12/12</p><p>1. In the gametic life cycle all cells except the ___gametes___ are diploid. And gametes are produced by ___meiosis___. </p><p>2. Reproduction is ciliates </p><p> a) In the Asexual phase the organisms go through ______mitotic division____ </p><p> b)The sexual phase is known as __conjugation_____, in which the organisms exchange ___micronuclei___ . </p><p>3. Why did plants leave the water and move to land?</p><p>Less competition, little/no predators, water is crowded, more sunlight</p><p>4. What are the adaptions that plants needed to live on land?</p><p>CarotinoidsUV radiation protector Conservation of water  cuticle Autotrophs Sporopollenin protective coating protects spores and pollen from desiccation Guard cells  let air in (when open) and Prevent water loss when closed Gamotangia  protects gametes Xylem and Phloem  (some) vascular tissue Seeds  some Secondary plant products  (some) plant products (chemicals) that discourage animal predation </p><p>5. Define the following: </p><p>Sporophyte- the diploid generation of plants (or protists) that have a sporic life cycle </p><p>Sporangia- structures that produce and disperse the spores of plants (or protists)</p><p>Spore- a haploid reproductive structure of plants that is dispersed into the environment and is able to grow into a new plant gametophyte</p><p>1060 Hixson-Lied Student Success Center v 515-294-6624 v [email protected] v http://www.si.iastate.edu Sporopollenin- the tough material that composes much of the walls of plant spores and helps to prevent cellular damage during transport in the air. </p><p>Apical Meristem- a group of actively dividing cells at growing tip </p><p>6. Draw a basic plant life cycle, labeling the sporophyte, gametophyte, spore, egg, sperm, and zygote stages. Indicate whether each stage is haploid and or diploid. Label where mitosis, meiosis and fertilization occur.</p><p>7. in most plants, the ___sporophyte (2N)___ stage is dominant </p><p>8. In Bryophytes the ___gametophyte (1N)____ stage is dominant</p><p>9. What are the 3 types of Bryophytes?</p><p>Moss, Hornwort, Liverwort</p><p>Bryo= moss phyte=plan</p><p>10. Define: </p><p>Archegonia- produces eggs, </p><p>Antheridia- produces sperm 11. Mosses have flagellated sperm and requires ____water___ to move and fertilize the egg.</p>