CSS Zoology Past Paper 2015
Paper-I
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II by selecting TWO questions from EACH
SECTION. (20×4)
PART-II
SECTION-I
Q. No. 2
(a) Describe the importance of insects to mankind.
(b) Explain acoelomate, pseudocoelomate, and coelomate conditions in animals.
Q. No. 3 Write a detailed essay on Metazoa.
Q. No. 4 What is polymorphism? Compare a polyp of Obelia with the medusa of Obelia.
Q. No. 5 Earthworms are friends of farmers! How? Discuss in detail.
SECTION-II
Q. No. 6
(a) Describe different types of cartilage found in vertebrates.
(b) What are the different views regarding sense organs in mammals?
Q. No. 7
(a) What is a placenta? Give an account of placentation in mammals.
(b) Explain the physiology of muscle contraction and relaxation.
Q. No. 8 What is excretion? Give an account of various types of excretory products in animals.
Paper-II
PART-2(Subjective) 80 Marks
Attempt ONLY FOUR Questions from PART-II by selecting TWO questions from EACH
SECTION. (20×4)
PART-II
SECTION-I
Q. No. 2
(a) How does the Hypothalamus-Pituitary Gland regulate and control thyroid endocrine functions in mammals?
(b) How is oxygen transported in blood?
Q. No. 3
(a) What is the role of nephrons in urine formation? How are different types of Leukocytes (white blood cells) formed in the body?
(b) How are proteins digested and absorbed in the gastrointestinal tract?
Q. No. 4
(a) Compare the Mendelian Principle of Segregation with that of Independent Assortment.
(b) How does the external environment affect gene expression?
SECTION-II
Q. No. 5
(a) “Ontogeny repeats phylogeny.” Discuss and compare the Theory of Recapitulation (Biogenic Law) proposed by Ernst Haeckel with Von Baer’s Rule of Embryology, postulated by Karl Ernst Ritter von Baer.
(b) How will you reconcile the debate between religion and science on the issue of the evolution of human beings?
Q. No. 6
(a) “Living (biotic) organisms and their nonliving (abiotic) environment are inseparably interrelated and interact upon each other.” Discuss.
(b) Define and differentiate between:
(i) Food Chain & Food Web
(ii) Stenothermal & Eurythermal
(iii) Lentic & Lotic Communities
(iv) Fisheries & Aquaculture
Q. No. 7
(a) “Ecosystems are capable of self-maintenance and self-regulation as are their component populations and organisms.” Discuss.
(b) Write short notes on:
(i) Conservation of Biodiversity
(ii) Climate Change & Global Warming
(iii) Liebig’s Law of the Minimum
(iv) Positive Interactions (Commensalism, Cooperation & Mutualism)