Floridian starch is characteristic energy storage material of which algae

Floridian starch is the energy storage material for the red algae. Red algae are called Rhodophyta and are the oldest group of algae that are eukaryotes. They constitute about 6000 species that are predominantly found in the marine ecosystem.

They store their energy in the form of floridian starch which has structural similarities with the starch granules of higher plants but they do not contain amylose as higher plants do.  

The building block of floridian starch is UDP- glucose which is primarily joined by α(1-4) glycosidic linkage but sometimes become branched by forming α(1-6) glycosidic linkage. So its structure is similar to amylopectin of higher plants.

d) center of the mid-ocean ridge

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step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.