Volvox is a Chlorophyte, or green alga. It exists as a grand spherical colony. Each little alga within the colony bears two flagella, whip-like hairs. The individual alga are connected to each other by thin strands of cytoplasm that enable the whole colony to swim in a coordinated fashion.
www.microscopy-uk.org.uk/mag/artdec03/volvox.html www.microscopy-uk.org.uk/mag/artdec03/volvox.html
Micscape Magazine for enthusiast microscopy ... They do this in a coordinated manner so that the entire colony can move in one direction. To see Volvox in locomotion is simply breathtaking. This image shows a colony with one large daughter colony. These develop from one one cell inside the sphere.
www.microscopy-uk.org.uk/mag/art98/volv.html
Volvox is one of the best-known chlorophytes and is the most developed in a series of genera that form spherical colonies. Each mature Volvox colony ... A coenobium is a colony containing a fixed number of cells, with little or no specialization. They occur in several groups of algae. The cells are often embedded in...
www.absoluteastronomy.com/topics/Volvox www.absoluteastronomy.com/topics/Volvox
20. How can the cells in a Volvox colony coordinate movement? 21. “Sea lettuce” is a multicellular alga known as . Reproduction in Green Algae (pages 512–514); 22. What occurs in the process known as alternation of generations? ... Also, label the places where the processes of fertilization, mitosis, and meiosis occur.
www.pearsonschool.com/live/customer_central/microsite/c... www.pearsonschool.com/live/customer_central/microsite/cafreelearning/science/Biology/Biology/Bio/Chapter_20/brgs6204.pdf
Following Fertilization, the Zygote forms a thick Spiny Cell Wall that is frequently red. This functions as a "resting" stage. ... The Individual cells in a Volvox; Colony resemble Chalmydomonas.
www.botany.hawaii.edu/faculty/webb/BOT311/Chlorophyta/C... www.botany.hawaii.edu/faculty/webb/BOT311/Chlorophyta/Chlorophyta-4-00.htm
19. The freshwater alga Spirogyra forms long threadlike colonies called . 20. How can the cells in a Volvox colony coordinate movement? 21. “Sea lettuce” is the multicellular alga . Reproduction in Green Algae ... Also, label the places where the processes of fertilization, mitosis, and meiosis occur.
members.myepath.com/jwthompson/PDF%20Files/brgs6200.pdf
In order to get from above the line to below the line (from diploid to haploid), a cell must undergo meiosis. In order to get from below the line to above the line (from haploid to diploid) fertilization must occur. ... They divide asexually to produce a daughter colony. ... Below: Volvox X 100. Notice the daughter colonies...
faculty.clintoncc.suny.edu/faculty/Michael.Gregory/file... faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102%20lectures/Protists/protists.htm
Fig. 4B. – A Volvox colony in a female phase, producing numerous ova or egg-cells (E). (After Klein.) ... When the conditions of life are untoward, conjugation is apt to occur, and it may be followed by new combinations of qualities, ... The gist of fertilization throughout life remains as the union of two sex-cells,
www.udayton.edu/~hume/Geddes/geddes.htm
Although they are independent, they act together to bring about movement of the entire colony. Examples of organisms showing this type of thallus are Gonium , and Pandorina. The hollow spherical thallus of Volvox represent the most highly developed motile colony. ... (c)Foliaceous Thalli: When cells divisions occur in two planes,
www.scribd.com/doc/2409467/Chlorophyta
The Doctrine of Evolution. Its Basis and Its Scope. Henry Edward Crampton ... and the reflex conduct of the units of a Volvox colony can be justly denoted altruistic, even though in this case, as before, there can be no conscious recognition of the reasons why mutual interests are best served by what is actually done.
englishatheist.org/darwin/doctrine/Chapter7.htm