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- Orchidaceae (20056 bytes)
14: ...nd their [[symbiosis]] with mycorrhizae, are considered by some to be the culmination of floral [[evol...
16: ...s). He was a student of [[Aristotle]] and is considered the father of [[botany]] and [[ecology]].
18: Orchids, in their natural habitat, are considered by [[CITES]] as threatened or endangered. They...
20: == General description ==
21: ...itan]] in distribution, except [[Antarctica]] and deserts. The great majority are to be found in the [... - Algae (8082 bytes)
2: ... group, but a level of organization that may have developed several times in the early evolutionary hi...
4: ...ups may contain members that are [[mixotrophic]], deriving energy both from photosynthesis as well as ...
6: ...ll algae have photosynthetic machinery ultimately derived from the [[cyanobacteria]], and so produce [...
8: ...se for most marine [[food chain]]s. In very high densities (so-called [[algal bloom]]s) they may disc...
12: ... some recent treatises on algae specifically exclude them. Cyanobacteria is one of the first groups o... - Seaweed (2271 bytes)
1: ...d along the Southern California Coast. Photo provided by [http://classroomclipart.com Classroom Clip A...
8: * [[Thallus (tissue)|thallus]]: the algal body
9: ** [[blade]]: a flattened structure that is somewhat leaf-li...
11: ...- Air [[bladder]]s: [[float]]-assist organ (on blade)
12: ... -- [[float]]s: float-assist organ (in between blade and stipe) - Fern (7930 bytes)
13: ...hyta''', formerly known as Filicophyta. A fern is defined as a [[vascular plant]] that does not produc...
18: ...grows by cell division into a [[haploid]] '''''prothallus''''' (a [[gametophyte]] phase)
19: # Prothallus produces [[gametes]]
20: ... Male gamete fertilizes a female gamete in the prothallus
25: ...zome]]: Creeping [[Plant stem|stem]], sometimes underground, absorbs [[nutrient]]s, anchors plant - Fungus (12992 bytes)
15: ...CAS_mushrooms001A.jpg|thumb|left|200px|Image provided by [http://classroomclipart.com Classroom ClipAr...
18: ...s, with consequences varying from mild itching to death. Other parasitic fungi infect [[plant]]s, caus...
21: ... even very knowledgeable persons occasionally misidentify wild mushrooms, with sometimes fatal consequ...
22: ...AS_mushrooms003A.jpg|thumb|right|200px|Image provided by [http://classroomclipart.com Classroom ClipAr...
24: Fungi can be divided into two basic morphological forms, yeasts and h... - Moss (8361 bytes)
19: ...early differentiated stem and leaves, the lack of deeply lobes or segmented leaves,and the absence of ...
21: ...e. the [[diploid]] body) are short-lived and dependent on the gametophyte. This is in contrast to the ...
25: ...microphylls'). From the tips of stems or branches develop the sex organs of the mosses. The female org...
27: ...ture. Within the capsule, spore-producing cells undergo [[meiosis]] to form haploid spores, upon which...
34: ...yta]] ([[bryophyte]]s), within which the mosses made up the class Musci. This group, however, is [[pa... - Lichen (7988 bytes)
8: ...ichens''' are [[symbiosis|symbiotic]] organisms made up by the association of microscopic [[green alga...
10: ...gus protects the alga against drying out and provides it with minerals obtained from the [[substratum]...
14: ...e photobiont may also influence it in some cases. Dead or dying photobiont cells may be digested by th...
16: ...charide layer in the cortex. Although each lichen thallus generally appears homogenous, it may consist of s...
22: ...ue to the relative lack of differentiation in the thallus, the line between diaspore formation and vegetati...
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