Intelligent Systems in Plants — DU B.Sc. (Hons.) Botany Previous Year Question Papers

All parts of a question must be answered together. 2. Write a short note on the following (any three) (3x5=15) (a) Seed germination and factors effecting seed germination in plants (b) Secondary metabolites (c) Adaptive intelligence in carnivorous plants (d) Cell to cell communication Differentiate between the following (any five) (5x3=15) (a) Xylem and Phloem (b) Osmosis and Imbibition (c) Cold and heat stress (d) Collenchyma and Sclerenchyma (e) Hydrophyte and Xerophyte (f) Carnivorous and parasitic plants (a) How do plants recognize their neighbors and relatives? (5) (c) Enumerate and explain the various tropic movements in plants. (5) 5. (a) What are the mechanical and chemical defenses exhibited by plants against predators? (5) (b) Describe the various strategies of pollination and seed dispersal in plants, citing relevant examples. (c) Explain the role of phytochrome in plant growth and development. (5) 6. (a) What are mycorrhizae? Explain the significance and dynamics of this relationship from the perspective of plant intelligence. (b) What is ROS. Explain their detrimental effect on plant growth and development. (c) Explain how the plants balance the dynamics of allocation of food between Source and sink. (5)