Phycology -The World of Algae — DU B.Sc. (Hons.) Botany Previous Year Question Papers

Algae (DSC) 2. Attempt Four Questions in all. 4. Draw well-labelled diagrams wherever necessary. 1. (a) Name the alga associated with the following terms: (any five) (5x1=5) (i) Red Tides (ii) Amylum Stars (iii) Salt Tolerance (iv) Gas Vacuoles (v) Red Snow (vi) Single Cell Protein Match the following terms of Column A with Column A Column B (i) Cap Cells Sargassum (li) Spermocarp Vaucheria (iii) Clump Formation Coleochaete (iv) Synzoospore Oedogonium (V) Conceptacle Ectocarpus (c) Briefly discuss the contributions of the following: (any two) (2x2.5=5) 2. Differentiate between the following: (any five) (a) Macrandrous and Nannandrous (b) Isogamy & Oogamy (c) Centric Diatom & Pennate Diatom (d) Phaeophyceae & Rhodophyceae (e) Unilocular Sporangium & Plurilocular Sporangium (t) Haplontic Life-Cycle & Diplontic Life-Cycle 3. Draw well-labelled diagram of the following: (any (a) Vaucheria - Thallus bearing sex organs (b) Sargassum - V.S. Male Conceptacle (c) Chara - T.S. Globule (d) Chlamydomonas/ Chlorella - E.M. 4. Write short notes on the following: (any three) (a) Sexual Reproduction in Coleochaete (b) Daughter Colony Formation (c) Heterocyst-Structure and Functions 5. Discuss the following : (any two) (2x7.5=15) (a) Life-Cycle of Polysiphonia /Gracilaria (with (b) Fine Structure and Evolutionary Significance of (c) Salient Features & Economic Importance of