Applied Phycology — DU B.Sc. (Hons.) Botany Previous Year Question Papers

b) Provide a detailed, labelled diagram illustrating the structure of a cyanobacterial c) Draw a schematic diagram of a closed photobioreactor, ensuring all primary components are clearly labelled and explained. d) Provide a well-labelled diagram of a phycoremediation system utilised for wastewater treatment using algae. e) Draw a sequential schematic diagram demonstrating the process of biodiesel production from microalgae. f) Illustrate the complex life cycle of Porphyra using a comprehensive, well-labelled diagram 3. Briefly explain (any three) 3X5=15 a) Write a short note on the development and environmental potential of algal bioplastics. b) Explain the causes of red tides and discuss the impact of three major algal toxins c) Describe the preparation and agricultural benefits of seaweed liquid extracts (SLE) as biofertilisers. d) Explain why Ectocarpus is considered an ideal model organism for genetic and developmental studies in brown algae. e) 'algae are the ideal superfoods of the future'. Support this statement by detailing the nutritional benefits of at least five distinct examples from various algal groups. 4. Answer any two of the following a) Distinguish between the first, second, and third generations of biofuels. Discuss how algal biofuels address the limitations of earlier generations, and outline the current commercial challenges facing the algal biofuel industry. challenges currently faced by the mariculture industry. d) Briefly discuss the formation of diatomaceous earth and explain its various commercial and industrial applications.