Ethology — DU B.Sc. (Hons) Biological Sciences Previous Year Question Papers

Name of, the Paper. : Ethology (DSE) Attempt four questions in all. All questions carrý equal marks. All parts of a question should be answered together. (a) Define the following: 1x5=5 = i Inclusive fitness (it) Code breakers (iti)* Reciprocal altruism (b) Distinguish between : 2×3=6 (1) Emotional quotient and Intelligence quotient (iti) Taxis and Kinesis (c) Briefly state the important contribution of the following scientists : 1x4=4 (1) Konrad Lorenz (iii; E.O. Wilson - 2. (a) Describe the principles of classical and operant conditioning providing. examples of each process. Discuss how these processes contribute to behaviour modification and learning in animals? 10 (b) Emotional intelligence provides a distinct advantage in the workplace, enhancing both personal perförmance and team dynamics. Discuss. 5 3. (a) What are the characteristics of eusociality? Describe Social organization in honey bees. * . 10 (b) What is altruism? With suitable example describe how Hamilton's rule provides the evolutionary significance of altruism. 5. 4. (a) Elaborate the different types of orientation behaviour with suitable examples. (b) What are the characteristics of reflexes? Explain the various types of reflexes. 7.5×2=15 (a) Elucidate the role of intersexual and intrasexual selection in sexual behaviour. Explain how they influence development of reproductive strategies in various species by giving suitable examples. 10 (b) What do you understand about sexual dimorphism? Explain the theories which explains the male ornamentation and female mating choice ? 5 Write short notes on any three of the following : 3x5=15 (1) Courtship behaviour in 3-spine stickleback (iv) Experiment to. prove dance as a mode of communication.