How Do Algae Reproduce?
Wetland Plants and Algae
PLB 423
Asexual reproduction
Asexual reproduction
Q: What is/are the primary
process(es) used by this
alga to undergo asexual
reproduction?
Q: What is/are the primary
process(es) used by this alga
to undergo asexual
reproduction?
1.
2.
3.
4.
5.
binary fission
mitosis
mitosis and cytokinesis
meiosis
meiosis and cytokinesis
1.
2.
3.
4.
binary fission
mitosis and cytokinesis
meiosis and cytokinesis
fragmentation
Euglena
Oscillatoria (Cyanobacteria)
Asexual reproduction
Asexual reproduction
Q: What is/are the primary
process(es) used by this alga
to grow?
Q: What is/are the primary
process(es) used by this alga
to undergo asexual
reproduction?
1.
2.
3.
4.
binary fission
mitosis and cytokinesis
meiosis and cytokinesis
fragmentation
1.
2.
3.
4.
5.
binary fission
autocolony formation
fragmentation
1 and 2
2 and 3
Oscillatoria (Cyanobacteria)
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Asexual reproduction in eukaryotic algae
Sexual Reproduction
• there are 3 major types of life
histories found in biology
zoospores
?
aplanospores
• they are defined by where meiosis
occurs in the life cycle
•Zygotic meiosis
•Gametic meiosis
•Sporic meiosis
Two dominant types of life cycles in freshwater algae
Sexual Reproduction
• Which best describes you? Where does
meiosis occur in humans?
1. Zygotic meiosis
2. Gametic meiosis
Define: haploid
Gametic Meiosis
Sexual Reproduction
Q: Chlamydomonas is an alga which
spends the majority of its life in the
hapolid phase. It can reproduce
sexually.
Which best characterizes the type of
meiosis found in this organism?
1. Zygotic
2. Gametic
3. Sporic
2
Sexual Reproduction
Zygotic Meiosis
Major groups of Freshwater Algae
Algal Groups
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Homework for Monday Nov. 10
For your particular group of algae
be able to describe:
z
z
z
z
z
Type of body forms present (illustrate)
Color and Pigmentation present
Storage product present
Type of cell covering
Type(s) of reproduction that occur
1. Cyanobacteria; Cyanophyta; Cyanophyceae
2. Chlorophyta; Chlorophyceae; Green algae
3. Chromophyta; Chrysophyta; Synurophyta;
Bacillariophyta; Diatoms; Golden Brown algae
4. Dinophyta; Dinophyceae; Pyrrophyta
5. Euglenophyta; Euglenophyceae; Euglenoids
Helpful websites:
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Algae in General
http://www.ucmp.berkeley.edu/people/brs/biol1a/Lect11.html
http://allserv.rug.ac.be/aquaculture/coursmat/faoman/mcd/micro/index.htm
http://www.life.umd.edu/labs/delwiche/PSlife/Syllabus1998.html
What are Phytoplankton?
http://ag.arizona.edu/azaqua/algaeclass/lecturenotes/12Apr99.htm
http://ag.arizona.edu/azaqua/algaeclass/lecturenotes/13APR99.HTM
Dinoflagellates
http://www.geo.ucalgary.ca/~macrae/palynology/dinoflagellates/dinoflagellates.html
http://www.ucmp.berkeley.edu/protista/dinoflagellata.html
Cyanobacteria
http://www-cyanosite.bio.purdue.edu/images/images.html
Chromophyta (Chromista)
http://www.ucmp.berkeley.edu/chromista/chromista.html
http://ag.arizona.edu/azaqua/algaeclass/lecturenotes/Diatomnotes.HTM
http://www.ucmp.berkeley.edu/chromista/bacillariophyta.html
Chlorphyta (Green Algae)
http://www.ucmp.berkeley.edu/greenalgae/greenalgae.html
Euglenophyta
http://www.plantbiology.msu.edu/triemer/Euglena/Index.htm
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