BIOLOGY 1B Lecture Notes - Lecture 9: Biological Life Cycle, Bryophyte, Saprotrophic Nutrition
11 Dec 2016
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Copyright © 2016 by Department of Integrative Biology, University of California, Berkeley
Introduction to Green Plants: Page 1 of 11
Plant&Biology&Lab&1:!
Introduction*to!Green%Plants!
Figure 1.1: The tree of life. This figure depicts the evolutionary relationships among groups of organisms that
you will encounter in lab.
Copyright © 2016 by Department of Integrative Biology, University of California, Berkeley
Introduction to Green Plants: Page 2 of 11
Things'To'Do'Before'Lab'
1. Read this lab introduction BEFORE coming to lab and familiarize yourself with the
Important Terminology listed below. Use the space on this intro to write definitions.
2. Review mitosis and meiosis in your text. Focus on the ploidy of the initial and the
resulting cells in each process. The specific phases of each process are not important
for the Biology 1B labs.
3. WATCH the life cycle video The Secret Life of Moss linked from the bCourses
home page, follow along with and complete the blank Moss Life Cycle Diagram
posted to bCourses.
4. Collect a small sample of a bryophyte somewhere on or near campus. Note the
environmental conditions under which the organism was growing (moist, dry, sunny,
etc.). Bring your sample to lab.
Things'To'Bring'to'Lab'
• Bring your textbook or access to the digital version. The photos and
figures in the text will help in understanding the material in this lab.
• Bring this introduction with you for reference; electronic access is great, but
keep in mind that it is helpful to have your definitions for the Important
Terminology.
• Bring your bryophyte specimen. You will use it to complete a graded
assignment.
Major'Objectives'of'This'Lab'
• Understand and compare the distinguishing features among bacteria,
algae.
• Understand the concept of alternation of generations (haplodiplontic
life cycle) in plants.
• Understand and recognize the structures associated with life cycles of
plants.
Important'Terminology'
Before lab familiarize yourself with the terminology below. Definitions can be found in this
pre-lab reading and in your textbook. Your lab instructor may include some of these terms
on a pre-lab quiz. You may use the space below to write a definition or description.
1. Autotroph
2. Heterotroph (including saprobe and parasite)
3. Mitosis
4. Meiosis
Copyright © 2016 by Department of Integrative Biology, University of California, Berkeley
Introduction to Green Plants: Page 3 of 11
5. Haploid
6. Diploid
7. Gamete
8. Sperm
9. Egg
10. Fertilization
11. Zygote
12. Embryo
13. Spore
14. Sporangium (pl. sporangia)
15. Sporophyte
16. Gametophyte
17. Antheridium (pl. antheridia)
18. Archegonium (pl. archegonia)
19. Haplodiplontic life cycle—an alternation between a multicellular haploid generation and
a multicellular diploid generation (also referred to as alternation of generations)
20. Haplontic life cycle—a life cycle in which only the haploid phase is multicellular (e.g.
Nitella sp. life cycle)
21. Diplontic life cycle—a life cycle in which only the diploid phase is multicellular (e.g.
human life cycle)
22. Alternation of Generations—an alternation between a multicellular haploid generation
and a multicellular diploid generation (also referred to as a haplodiplontic life cycle)
23. Heteromorphic vs. Isomorphic alternation of generations
24. Endosymbiosis
Document Summary
This figure depicts the evolutionary relationships among groups of organisms that you will encounter in lab. Introduction to green plants: page 1 of 11. Things to do before lab: read this lab introduction before coming to lab and familiarize yourself with the. Use the space on this intro to write definitions: review mitosis and meiosis in your text. Focus on the ploidy of the initial and the resulting cells in each process. Note the environmental conditions under which the organism was growing (moist, dry, sunny, etc. ). Things to bring to lab: bring your textbook or access to the digital version. You will use it to complete a graded assignment. Major objectives of this lab: understand and compare the distinguishing features among bacteria, algae, understand the concept of alternation of generations (haplodiplontic life cycle) in plants, understand and recognize the structures associated with life cycles of plants. Before lab familiarize yourself with the terminology below.
