Study Set Content:
They regulate the water content of the cell. in chlamydomonas
two or more vacuoles that contract and expand
A dominant feature of each Chlamydomonas
single, usually cup-shaped chloroplast that partially hides the centrally located nucleus.
proteinaceous structures thought to contain enzymes associated with the synthesis of starch.
Pyrenoids
Chlamydomonas One or two roundish are located in each chloroplast.
pyrenoids
Most species also have a blank on the chloroplast near the base of the flagella. ā¤µ
red eyespot
is sensitive to light; it is, however, merely a part of an organelle within a single cell and is in no way complex and multicellular like an eye.
red eyespot
Chlamydomonas production
Asexual reproduction is by mitosis; SEXUAL REPRODUCTION IS ISOGAMOUS
THREADLIKE ALGA
ULOTHRIX.
oulus
wooly
thrix
hair
Ulothrix Each chloroplast contains
one to several pyrenoids
Each alga consists of a single row of cylindrical cells
attracted end to end
The basal cell of each filament is slightly longer than the other cells and functions as
attachment cell, or holdfast.
Any of the cells, except the blank may divide
holdfast
Ulothrix reproduction
Asexual reproduction is by zoospores.; sexual reproduction is isogamous.
, has watery sheaths (which make the alga feel slimy to humans)
Watersilk or spirogyra
Ā unbranched filaments of cylindrical cells, frequently float in masses at the surface of quiet waters
Spirogyra
Most Spirogyra species have one or two chloroplasts in each cell, but some have as many as
16.
Each cell contains one or more long, frilly, ribbon-shaped
Chloroplasts
Ulothrix reproduction
Asexual reproduction is by fragmentations. Sexual reproduction is by conjugation.
