Concept of Animal Behaviour — DU B.Sc. (Hons.) Zoology Previous Year Question Papers

2. Attempt four questions in all including Question No. 4. All parts of a question should be answered together. (a) Define any five of the following terms: (1x5=5) (11i) Sign stimuli (vi) Sexual Dimorphism (b) Differentiate between any three of the following: (i) Visual and Auditory communication (II) Altruism and reciprocal altruism (ili) Intersexual and Intrasexual selection (v) Innate and learned behaviour (c) Give the important contributions made by the following scientists (1x4=4) (11l) Ivan Pavlov (iv) Robert Trivers 2. (a) What is sexual selection? Explain the two ways in which a male can gain advantage over other males with example. (8) (b) Add a note on different animal communication systems. (7) (a) What are the role of courtship behaviour in animals? Describe the courtship rituals in fruit flies, Drosophila melanogaster. (8) (b) Explain the importance of Tinbergen's four questions in modern study of animal behaviour by giving suitable examples. (7) 4. (a) What are the characters of eusocial insects? Describe the communication system in honey bees. (8) (b) What is Hamilton's equation? Explain how Hamilton's rule provides the evolutionary significance of altruistic behaviour. (7) 5. (a) Describe associative learning. Discuss how skinner's experiment contribute to behavior modification and learning in animals? (8) (b) In what ways can the studies of animal behaviour be relevant to both biologists and general 6. Write short notes on any three of the following: (a) Fixed Action Pattern (FAP) (b) Pavlovian conditioning (c) Kin selection. (e) Sexual conflict in parental care