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Biodiversity in Animals Biodiversity III: Plants Oedogonium: Figure labels (left to right): oogonium; antheridium Q. What type of sexual reproduction occurs in Oedogonium?
coevolution Coevolution, Competition and Biodiversity are all different words, but have many things in common. All the words involve animals interacting with each
Biodiversity Biodiversity is described by Ruth Patrick as, "the presence of a large number of species of animals and plants?"(Patrick 15). In other words, biodiversity
(Food, Services, clothing, etc) Biodiversity: Refers to Variety in life in terms of animals and plants. OR Biodiversity is the variation of life forms within a given
important thing in any biome or ecosystem because you need more then one species of animals or creatures. Having biodiversity also creates a more colorful environment.
Submitted by diap8704 on December 5, 2006
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Biodiversity III: Plants
Oedogonium:
Figure labels (left to right): oogonium; antheridium
Q. What type of sexual reproduction occurs in Oedogonium? A. Oogamous sexual reproduction
Q. Is this species of Oedogonium
monoecious or dioecious? A. Monoecious if antheridia and oogonia on same filament
Dioecious if antheridia & oogonia on separate filaments
Q. What is the name given to the
male gametangium? A. Antheridium
Q. What is the function of zygospores? Are they haploid or diploid? A. Allows organism to survive during unfavourable conditions
Diploid
Q. What is the advanced reproductive characteristic illustrated by Oedogonium?
It is oogamous gametes are not morphologically similar (male small and motile, female larger, non-motile)
Mosses
female thallus male thallus
(haploid) (haploid)
Q. Where are the gametangia located? A. At the tips of the male and female shoots
Q. Where would you expect to find the spore mother cells? A. In the capsule: they divide by MEIOSIS to produce haploid spores
Q. What is the ploidy of moss spores? A. Haploid
Q. What vegetative features found in plants does the moss have?
Rhizoids (root-like), body = thallus, and stalk (stem-like).
Q. What reproductive features found in plants does the moss have?
Archegonium, antheridia, spores
Alternation of generations. The haploid gametophyte is always dominant and the diploid sporophyte is always at least partially dependent on the gametophyte.
Meiosis: produces spores
Q. What features do mosses have that indicate they are still "tied" to moist habitats?
They lack a vascular...
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