1 Algal Morphology I. Internal thallus morphologies II. External thallus morphologies III.Algal Growth Unicells- solitary cells can be motile or non motile ex. Chlamydomonas Colony- an assemblage of individual cells, variable or predictable number of cells, flagellated or non motile coenobium- predictable number and arrangement of cells ex. Volvox Uniseriate- cells occuring in a single row Multiseriate- consisting of several rows of cells in a longitudinal seriesin one or two planes Filamentous- daughter cells remain attached to each other following cell division forming a chain of cells Coenocytic/ Siphononous – one large multi-nucleate cell lacking crosswalls Codium Utricles -swollen, terminal end of the siphon
11
Embed
Algal Morphology - University of California, Santa Cruz · 1 Algal Morphology I. Internal thallus morphologies II. External thallus morphologies III.Algal Growth Unicells- solitary
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
1
Algal Morphology
I. Internal thallus morphologies II. External thallus morphologies III.Algal Growth
Unicells- solitary cells can be motile or non motile ex. Chlamydomonas
Colony- an assemblage of individual cells, variable or predictable number of cells, flagellated or non motile coenobium- predictable number and arrangement of cells ex. Volvox
Uniseriate- cells occuring in a single row
Multiseriate- consisting of several rows of cells in a longitudinal seriesin one or two planes
Filamentous- daughter cells remain attached to each other following cell division forming a chain of cells
Coenocytic/ Siphononous – one large multi-nucleate cell lacking crosswalls
Codium
Utricles -swollen, terminal end of the siphon
2
Coenocytic thallus construction - What does this allow? What special issues does it raise?
• Chloroplast movement
• Herbivory – healing • Well developed cytoskeleton • Repairs membrane in 1-2 seconds
Terrestrial Leaf Algal blade
Cortex-pigmented cortical cells
Medulla – unpigmented medullary cells
Limited cell differentiation compared to terrestrial plants…