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CSS past paper
CSS Zoology Past Paper 2024
CSS Zoology 2024 carries 100 marks over 3 hours. It has 7 questions.
- Marks
- 100
- Time
- 3 hours
- Questions
- 7
How to attempt: Attempt ONLY FOUR questions from PART-II. ALL questions carry EQUAL marks.
Questions
Question 1 (Part I) is the paper's MCQs, which are not reproduced here.
- Q. 2How does homology contribute to mapping phylogeny through a nested hierarchy of characters, and how do scientists use it to understand the evolutionary history of organisms?(20)
- Q. 3Explore the varied lifestyles of unicellular eukaryotes, emphasizing their roles as disease agents, endoparasites, and vital components of the food chain. Assess the impact of these organisms on human health and ecosystems.(20)
- Q. 4Describe the early evolution of chordates. Also, discuss the functional anatomy of tunicates.(20)
- Q. 5Describe the key features of the molluscan body plan. Subsequently, explain the biological and economic impact of ocean acidification on mollusc growth and harvest.(20)
- Q. 6Describe the role of the hypothalamus in endocrine function in vertebrates. Furthermore, explain how the pineal gland directly or indirectly regulates circadian and annual rhythms in animals.(20)
- Q. 7Discuss the key postulates of Darwin's evolutionary theory and analyze the contributions of Mendelian genetics and the chromosomal theory of inheritance in reshaping the evolutionary theory.(20)
- Q. 8Describe the factors involved in regulating digestive system function. Also, outline the types of motilities in each digestive tract segment and the controlling factors for each.(20)
- Part-II is to be attempted on the separate Answer Book.
- Attempt ONLY FOUR questions from PART-II. ALL questions carry EQUAL marks.
- All the parts (if any) of each Question must be attempted at one place instead of at different places.
- Write Q. No. in the Answer Book in accordance with Q. No. in the Q.Paper.
- No Page/Space be left blank between the answers. All the blank pages of Answer Book must be crossed.
- Extra attempt of any question or any part of the question will not be considered.