Title : Amoeba proteus Magnification
: 100x
Image : amoebax100.jpg
Keywords : Amoeba, protist, rhizopoda, pseudopodia
Text : Amoeba is a single-celled protist that moves by extending pseudopodia ( literally “false feet” ) from its cell. The cytoplasm flows along one or more pseudopodia, and in this way Amoeba can surround and engulf its food. The nucleus is the large red oval in the center of the cell.
Title
: Difflugia
Magnification : 100x
Image : difflugiax100.jpg
Keywords : Difflugia, protist, Rhizopoda, test
Text : Difflugia , like Amoeba, is a single celled protist. The red in the photograph is a covering of sand grains that forms a test, or protective shell, around the cell. The light blue color in the photo is the cytoplasm of Difflugia emerging from the test.
Click here to see higher magnification.
Title : Ceratium
Magnification : 100x
Image : ceratiumx100.jpg
Keywords : Ceratium, protist, dinoflagellate
Text : The dinoflagellate Ceratium
swims using flagella. The slight constriction near the middle of the cell is the
annulus, or girdle. The cell wall consists of plates of cellulose that
produce different shapes in different species. This particular image shows
several Ceratium that have a characteristic “Eiffel tower” shape.
Click here to see higher magnification.
Title
: Trypanosoma
Magnification
: 200x Image :
trypanosoma200.jpg
Keywords : Trypanosoma, protist, kinetoplastida,
sleeping sickness, Chagas
Text : The parasitic Trypanosoma
infects the blood, and causes sleeping sickness in humans and domestic animals
in Africa. A different species of Trypanosoma causes Chagas disease in
South America. The slide shows red blood cells, the large cell with a
pink-stained nucleus near the top is a white blood cell. The actual Trypanosoma
parasites are the small, pink, hair-like
structures between the red blood cells.
Click here to see higher magnification.
Title: Euglena
Magnification : 100x
Image : euglenax100.jpg
Keywords : protista, euglena
Text: Euglena is a common single-celled
protist found in ponds. You can see the nucleus near the middle of each cell. Euglena
swims using a flagellum (not visible in this image).
Click here to see higher magnification. 450x
Title: Paramecium
Magnification : 100x
Image : paramecium.jpg
Keywords : protista, cilia, paramecium
Text: Paramecium swims around using hundreds of tiny cilia covering the surface of the cell. Although only one dark nucleus is visible in this image, Paramecium actually has two nuclei: a large macronucleus and a smaller micronucleus.
Click here to see higher magnification. 400x
Title: Volvox
Magnification : 50x
Image : volvox.jpg
Keywords : protista, colony, volvox
Text: The large green circles are colonies of Volvox. The colonies move through the water in a rolling motion, caused by hundreds of tiny cilia. The dark green circles are daughter colonies, that are produced asexually, and will eventually break off and form a new independent colony.
Click here to see higher magnification. 100x
Title : Peridinium Magnification : 100x Image : peridin100.jpg
Text : This dinoflagellate has a thick plates (theca) surrounding the cell. The light blue areas are empty theca, the purple spots are cells inside the theca. Large numbers of these dinoflagellates can cause “red tides” that kill fish and other animals. DNA evidence suggests that Peridinium is related to ciliates. At higher magnification you can see the groove through which the flagella protrude.
Click here to see higher magnification (400x)
Link to : Protista and BSC 2011C
Title : Stigeoclonium Magnification : 400x Image : stigeo400.jpg
Keywords : protista, green algae, chlorophyta
Text : Stigeoclonium is a green algae that grows in long branches. It is found in freshwater streams and rivers and is tolerant of water pollution, particularly pollution by heavy metals. Reproduction is mainly asexual (part of a filament breaks off and grow into another alga).
Click here to see higher magnification (1000x)
Link to : Protista and BSC 2011C
Title : Chlamydomonas Magnification : 400x Image : chlamy400.jpg
Keywords : Chlorophyta, algae
Text : Chlamydomonas
is a green alga that is unicellular, and swims around with long flagellae. This
image was artificially colored to show the cells, the flagellae can be seen as
thin, hair-like structures, particularly under the higher magnification. Most of
the cells on this slide were clumped together like this in what look very much
like colonies, so it possible that the slide is actually showing the cells of a
related alga, Gonium, which is typically colonial.
Click here for higher magnification (1000x)
Link to : Protista and BSC 2011C
Title: Diatoms
Magnification : 100x
Image : diatom.jpg
Keywords : bacillariophyta, pennate, silica
Text: Diatoms are algae that are surrounded by two
hard silica shells. This image shows a mixture of different diatoms, the high
magnification view shows a typical pennate (canoe-shaped) diatom. Diatomaceous
earth is composed of the shells of diatoms. It is used in lubricants, lens
polishers, car wax and as an insecticide.
Click here to see higher
magnification. (400x)
Link to: Protista and BSC 2011C
Title: Zygnema conjugation
Magnification : 40x
Image : zygnema40.jpg
Keywords : algae, chlorophyta
Text: This freshwater green alga has two star-shaped
chloroplasts in each cell of the filament. In this image the algae are
reproducing sexually: two filaments grow towards each other and join, to form a
single round zygospore (greenish circles). The zygospore sinks to the bottom of
the pond and will grow when conditions are favorable.
Click here to see higher
magnification. (l00x)
Link to: Protista and BSC 2011C
Title: Ulothrix
Magnification : 100x Image : ulothrix100.jpg
Keywords : algae, chlorophyta
Text: Like Zygnema this is a green alga. Ulothrix
has chloroplasts forming a ring-like band around the cell wall. The bottom end
of each filament is a holdfast that attaches to the substrate, such as rocks. It
grows in both freshwater and saltwater
Click here to see higher magnification. (400x)
Link to: Protista and BSC 2011C