About this site | Links Algae quiz | Assignment |
Reminder: Bring the two samples of algae that you collected to lab today! Where to collect algae?
GENERAL | ||
World of algae | Algae - diversity | Phytoplankton key |
Seaweeds | Directory of Algal Images | Phycological Images |
Algal Microscopy BGSU | Economic Uses of Algae | Algae World Wide Web Site |
What are Algae? | Algae - common fresh water types | Algae - some images |
Phycology - images | algae - Google images | Useful algal links |
Algae of tidepools | Algal images - Ohio Univ. | algae - images |
protist images - | ||
CYANOPHYTA | ||
Cyanobacteria
U. Wisc.
Cyanobacteria Image Gallery |
Cyanobacteria
Images
Algae - key |
Cyanophyta |
Gleocapsa | Gleocapsa - Google images | |
Nostoc | Nostoc | Nostoc images |
Nostoc - Google images | ||
Anabaena | Anabaena - Google images | |
Oscillatoria | Oscillatoria | |
EUGLENOPHYTA | ||
Euglena gracilis | Euglena | Euglena images + movie |
Euglena - Google images | ||
DIATOMS | ||
Diatom images - | Diatoms - composite grouped | Diatoms -- Images database |
Bacillariophyceae | Pennate and Centric | Diatoms |
Diatom - Centric -e.m. | Diatom Centric | Diatoms Google images |
diatomaceous earth | Centric - diatomaceous earth | Diatomaceous earth - Google images |
Diatom collection | Diatoms - morphology | |
RHODOPHYTA | ||
Red algae | Rhodophyta | Rhodophyta Images Rhodophyta images |
Porphyra | Chondrus crispus | Chondrus crispus |
Polysiphonia | Polysiphonia tetraspores | Polysiphonia -images and description |
Rhodophyta - Google | Polysiphonia - Google images | |
PHAEOPHYTA | ||
Phaeophyta | Diagnostic Characters of the Brown Algae | Brown algae - images |
Brown algae | Laminaria | Fucus - images |
Fucus- Goggle images | Brown Algae -- (Laminaria and Fucus) | Fucus |
CHLOROPHYTA | ||
Chlorophyta | Chlorophyta Images | Chlorophyta images |
Green algae - | Chlorophyta Google images | Division Chlorophyta - phylogeny |
Chlorophyta | ||
SPIROGYRA | Strands - Strands | Spirogyra |
Spirogyra- - Spirogyra | Spirogyra - | |
Spirogyra Pyrenoids | Spirogyra vegetative + zygotes | |
Spirogyra Conjugation | Spirogyra - animated gif - focus | |
Spirogyra - optical x.s. chloroplast | Spirogyra
diagram + photomicrograph |
|
. | Spirogyra - diagram and photo of life cycle | Spirogyra |
. | Spirogyra
- animation vegetative cell
|
?Spirogyra
- 404 detail of chloroplast
?Spirogyra - 404 nucleus see lect 16 http://www.kean.edu/~biology/lect_16.html |
music | ||
ULOTHRIX | Ulothrix Vegetative | Ulothrix |
. | Ulothrix | Ulothrix |
. | Ulothrix | Ulothrix sp. sporangia |
. | Ulothrix - chloroplast | Ulothrix - Google images |
Ulothrix - Ulothrix - Ulothrix - Ulothrix - | Life cycle - life cycle | |
OEDOGONIUM | Oedogonium rings | Oedogonium Google images |
Oedogonium images U. Wisc. | Oedogonium oogonium + antheridium | |
Oedogonium - diagram | Oedogonium | |
. | Oedogonium - | Oedogonium vegetative- pyrenoids and rings |
. | Oedogonium
oogonium, antheridium, zoospores |
Oedognium
- nice
Oedogonium - |
ULVA | Ulva | Ulva - Google images |
Ulva - index - U. Wisc. | ||
I selected links that provide images of algae similar to those observed in laboratory. Review the links as you prepare for lab and as you study for your lab exam.Reminder: Bring the two samples of algae that you collected to lab today! Where to collect algae?
In lab you are asked to focus on four things:
- Sample the diversity of the various Divisions of Algae
- Select one representative organism from each Division with which you will associate the characteristics of the Division
- Determine the Division to which each of the two algae you collected belongs
- Learn the pattern of reproduction of selected Green Algae
- Spirogyra
- Ulothrix
- Oedogonium
- Ulva
Where to collect Algae
The following locations probably will provide a variety of algal samples. Keep your specimens alive (provide conditions similar to those in which you collected the sample) in a jar, plastic bag, etc. that you keep exosed to light and at a temperature similar to that in which the algae were living.Prepare in advance by looking at the examples on the website, illustrations in your text, and illustrations in other reference books.
- Campus stream -- collect a rock or branch that is covered with green, slimy algal growth.
- Aquarium - collect a pebble with green growth on it , or scrape green or blue-green growth from the glass
- Tree bark - collect a fragment of tree bark that has green growth on it. Do not confuse moss plants (they are larger, and appear to have macroscopic leafy structures). In contrast, the algae may appear as a crust.
- Visit a pond, lake, stream or even a puddle in a local park or near your home and collect some of the "pond scum" floating on the surface, rocks or sticks with green growth on them.
- Visit the sea shore and collect macroscopic green, brown or red colored plants, which may be floating freely or growing attached to rocks or shells.
Assignment for Laboratory Exercise 10 -- Algae
1. Bring the two algae that you collected to laboratory today.
Complete page 10-3 and display your specimens at your desk.2. Examine the materials on display in the room. These will
include living and preserved specimens representing
diversity of algae; type specimens for the divisions we will
study; live and prepared slides illustrating reproductive
patterns of selected green algae; information from books and
journals related to these and to the economic importance of
algae and the ecological role of algae.3. Learn the major characteristics of the following division of
algae and one organism to represent each division:
Cyanophyta, Euglenophyta, *Diatoms (Chrysophyta), Rhodophyta,
Phaeophyta, Chlorophyta.4. Examine materials present which illustrate biological
diversity of the Divisions of algae. Recognize how, despite
the variation illustrated, each representative meets the
criteria for the division to which it belongs.5. Learn cell structure of the Green Algae Ä Spirogyra,
Ulothrix, Oedogonium, and patterns of reproduction of these
and Ulva.6. Show me the items on the check sheet (page 10-2) and have me
initial that page to indicate that you have shown them to
me.7. Prepare for a quiz.