Floridian starch is the photosynthetic reserve substance of red algae , occurring abundantly in certain basin - shaped grain cells. Most Rhodophycea store starch outside the chloroplast , often as a cap over a bulging pyrenoid. The major carbohydrate storage product of red algae is a type of starch molecule , that is more highly branched then amylopectin. Floridian starch stored as grains outside the chloroplast . Thus , the correct answer is option B.

Floridean Starch in Rhodophyceae

Floridean starch is a type of storage polysaccharide found in red algae, which belong to the phylum Rhodophyceae. This unique form of starch is characterized by its structure and composition, making it distinct from other types of starch found in different organisms.

Characteristics of Floridean Starch
- Floridean starch is a specialized form of storage carbohydrate that is found in red algae.
- It is composed of branched chains of glucose molecules, which are linked together in a unique pattern.
- Unlike the more common starch found in plants, floridean starch contains a higher proportion of branched chains, making it more resistant to degradation.

Function of Floridean Starch
- Floridean starch serves as a reserve energy source for red algae, allowing them to store excess glucose for future use.
- This starch is typically found in specialized structures within the algal cells, such as the floridean starch grains or pyrenoids.

Importance of Floridean Starch in Red Algae
- The presence of floridean starch in red algae is an adaptation that allows these organisms to thrive in diverse marine environments.
- It provides red algae with a source of energy that can be mobilized during times of low light or nutrient availability.

In conclusion, the presence of floridean starch in Rhodophyceae is a unique adaptation that plays a crucial role in the energy metabolism of red algae. Its distinct structure and function contribute to the success of these organisms in marine ecosystems.