A) in the Asexual Phase the Organisms Go Through __Mitotic Division

Worksheet 6: Leader: Courtney Grula Protists/Plants Answers Course: Bio 211 (4) Supplemental Instruction Instructor: Boury Iowa State University Date: 9/12/12

1. In the gametic life cycle all cells except the ___gametes___ are diploid. And gametes are produced by ___meiosis___.

2. Reproduction is ciliates

a) In the Asexual phase the organisms go through ______mitotic division____

b)The sexual phase is known as __conjugation_____, in which the organisms exchange ___micronuclei___ .

3. Why did plants leave the water and move to land?

Less competition, little/no predators, water is crowded, more sunlight

4. What are the adaptions that plants needed to live on land?

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

5. Define the following:

Sporophyte- the diploid generation of plants (or protists) that have a sporic life cycle

Sporangia- structures that produce and disperse the spores of plants (or protists)

Spore- a haploid reproductive structure of plants that is dispersed into the environment and is able to grow into a new plant gametophyte

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.

Apical Meristem- a group of actively dividing cells at growing tip

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.

7. in most plants, the ___sporophyte (2N)___ stage is dominant

8. In Bryophytes the ___gametophyte (1N)____ stage is dominant

9. What are the 3 types of Bryophytes?

Moss, Hornwort, Liverwort

Bryo= moss phyte=plan

10. Define:

Archegonia- produces eggs,

Antheridia- produces sperm 11. Mosses have flagellated sperm and requires ____water___ to move and fertilize the egg.

A) in the Asexual Phase the Organisms Go Through ______Mitotic Division____

A) in the Asexual Phase the Organisms Go Through __Mitotic Division