CSS Zoology Past Paper 2018
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II. (20×4)
PART-II
Q. No. 2 Discuss in detail how marine and terrestrial animals meet the problems of salt and water balance.
Q. No. 3 Differentiate between endocrine and exocrine glands. Through how many kinds of receptors do the hormones act and how is the secretion rate controlled?
Q. No. 4 Arthropod exoskeleton is the most complex of invertebrate integuments. Describe its structure and explain the difference in the way the cuticle is hardened in Crustaceans and in insects.
Q. No. 5 Members of such a large and diverse phylum as mollusca impact humans in many ways. Discuss. Also, name classes of the phylum with two differential characters for each.
Q. No. 6
(a) Discuss parasitic adaptation and medical importance with respect to nematodes.
(b) Write a note on structural and functional adaptation in mammals.
Q. No. 7 Metamerism profoundly influences virtually every aspect of annelid structure and function, such as the anatomical arrangement of organs that are coincidentally with Metamerism. Discuss through logical reasoning.
Q. No. 8 Write short notes on any FOUR of the following:
(a) Gas exchange in reptiles
(b) Carbohydrates: Nature’s Most Abundant Organic Substance
(c) Mendel’s Law of inheritance
(d) Food chain
(e) Social Behaviour and its impact on individuals
(f) Composition of blood