PUNJAB PUBLIC SERVICE COMMISSION

COMBINED COMPETITIVE EXAMINATION FOR
RECRUITMENT TO THE POSTS OF
PROVINCIAL MANAGEMENT SERVICE, ETC. – 2015

SUBJECT: ZOOLOGY (PAPER-I)

TIME ALLOWED: THREE HOURS
MAXIMUM MARKS: 100

Note: Attempt any FIVE questions selecting at least TWO from each section. All questions carry equal marks.Attempt in English language.

Q.1. a). Discus different types of Reproduction in Protozoa. b). Demonstrate evolution of canal system in Porifera.

Q.2. a). Describe some important parasitic nematodes in man.
b). Give an account of coral and coral reefs.

Q.3. a). Explain metamerism and tagmatization in Annelids
b). Define and mention various types of metamorphosis in Arthropoda.

Q.4. Write short notes on nay FOUR of the following :
a) Skeleton in Echinodermata
b) Nematocysts
c). Reproduction System in Porifera
d).Torsion in Mollusca
e). Ecdysis


Q.5. a). Give an account of swim blabber in fishes.
b). Describe Reproduction and development in amphibian.

Q.6. a) What do you know about excretion and osmoregulation in reptiles.
b) Explain aerial adaptions in birds.

Q.7. Describe basic plan of vertebrate body .
b). Give comparative account of evolution of heart in vertebrates.

Q.8. Write short notes of any of the following :
a). Exertion and osmoregulation in mammals
b). Extinction of Dinosaurs
c). Evolution of stomach in vertebrates.
d). Primitive jawed vertebrates.
e). Poisonous apparatus and biting mechanism of poisonous snake.

PUNJAB PUBLIC SERVICE COMMISSION

COMBINED COMPETITIVE EXAMINATION FOR
RECRUITMENT TO THE POSTS OF
PROVINCIAL MANAGEMENT SERVICE, ETC. – 2015

SUBJECT: ZOOLOGY(OPTIONAL) (PAPER-II)

TIME ALLOWED: THREE HOURS
MAXIMUM MARKS: 100

Note: Attempt any ONE question from each section. All questions carry equal marks.

Q.1. a). Describe “Mitochondria” as power house of the cell. Also describe the structural and functional differences between the inner and outer membranes of mitochondria.
b). Describe the various steps involved in Electron transport chain.


Q.2. a). Write down the main steps in mechanism and enzymes involved in DNA replication.
b). Describe the role of microtubules in chromosome movement during mitosis and meiosis.

Q.3. a). What four general factors are involved in regulating digestive system functions? What is the role of each.
b). Compare the structure and functions of five types of leucocytes.

Q.4. a). Describe the sequence of events that occur at a neuromuscular junction.
b). Describe the levels of organization in a skeletal muscle . What is the functional unit of skeletal muscle?

Q.5. a). What is coupling and repulsion hypothesis. Discuss it with suitable example.
b). Write short note on “ Central Dogma “ and Genetic Code”


Q.6. a). How are genetic maps constructed ? What are the fundamental assumptions on which genetic maps are based ? why extremely short regions are used in establishing genetic maps?
b). describe the methods of mapping of bacterial Chromosome.

Q.7. a). Define fossils. How are they formed ? Describe their importance in organic evolution.
b). What is adaptive radiation ? Explain it with examples.


Q.8. Define and describe the hypothesis of “ Inheritance of acquired characters”.
b). What are factors which influence allelic frequency? How these devices from hardy Weinberg equilibrium?

Q.9. a). What is soil ? describe soil flora and fauna of Pakistan soil.
b). What is ecological succession ? Describe the process of ecological succession in pound.

Q.10. a) What is population ? Describe its different characteristics.
b). How does energy flow in a ecosystem?

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