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Image #   25078C
Name:   Coralline red alga from Hawaii
Copyright:   Copyright 2009 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Coralline red alga (geniculate / branched type) from Hawaii. This SEM image shows a fracture through a geniculate coralline alga thallus (species unknown; from Hawaiian marine environment) revealing the mineralized calcium carbonate surface cell wall layers. Also seen are numerous disc-shaped chloroplasts inside the cells that carry out photosynthesis. Coralline algae have a thallus that is either crustose (non-geniculate, rock-like) or branched (geniculate, tree-like). The thallus is hard because of calcareous (mineralized calcium carbonate) deposits contained within the cell walls. Geniculate coralline algae are branching, tree-like plants which are attached to the substratum by crustose or calcified, root-like holdfasts. The plants are flexible by having non-calcified regions (genicula) separate by longer calcified sections (intergenicula). The colors of these algae are typically pink (or some other shade of red), and some species can be purple, yellow, blue, or gray-green. Coralline algae are widespread in all of the world's oceans. Many are epiphytic or epizoic, and some are even parasitic on other coralline algae. Coralline algae play an important role in the ecology of coral reefs.
Magnification*: x360
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   25078C 04.01.09 SEM photosynthesis cellulose wall cellulose walls carbohydrate carbohydrates algae coralline coralline algae alga red alga red algae coralline alga Hawaii Rhodophyta branched coralline branched coralline alga branched coralline algae genticulate coralline alga marine marine environment salt water saltwater sea water seawater CaCO3 calcium carbonate mineralized calcium carbonate red coralline alga red coralline algae Corallinaceae Corallinales algal thallus coralline alga thallus coralline algae thallus coralline algal thallus coralline thallus thallus corallines genicula epiphytic epiphytic coralline alga epiphytic coralline algae epizoic coralline alga epizoic coralline algae geniculate coralline geniculate coralline algae intergeniculate calcerous mineralized cell wall mineralized cell walls alga thallus algae thallus alga photosynthesis algae photosynthesis algal photosynthesis calcium carbonate cell wall calcium carbonate cell walls cell wall cell walls chloroplast chloroplasts corraline photosynthesis disc chloroplast disc chloroplasts disc shaped chloroplast disc shaped chloroplasts disc-shaped chloroplast disc-shaped chloroplasts marine alga marine algae

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