Zoology paper 2014

[Inerrant Inamorata]

PROVINCIAL MANAGEMENT SERVICES ETC. 2014
SUBJECT: ZOOLOGY PAPER-I

Attempt any FIVE questions at least two from each section.

Section-I

Q.1 a) Give an account of various type of locomotion in protozoa.
b) Describe the various kinds of Skeleton in Porifera.
Q.2 a) Explain the polymorphism in Coelentrate.
b) Discuss the parasitic adaptation in Platyhelmenthes.
Q. 3 a) Briefly discuss the water vascular system in starfish.
b) Describe the Larvae in various classes of Arthropoda.
Q. 4. Write a short note on any four of the following:
a) Metamorphosis in insects.
b) Economic importance of insects.
c) Shell in phylum Mollusca.
d) Various larval form of Echinodermeta and their evolutionary significance.
e) Metamerism in phylum Annelida.

Section-II

Q. 5 a) Give an account of the primitive jawless fishes and jawed fishes.
b) Discuss the various types of teeth and dentition in vertebrate animals.
Q. 6 a) Give an account of the evolution of heart in vertebrate animals.
b) Discuss the osmoregulation and Excertion in mammels.
Q. 7 a) Describe the origin of reptiles and extinction of Diosaurs in the cretaceous period.
b) Explain the evolution of jaw in vertebrate animal.
Q. 8 Write a short note on any 4 of the following:
a) Swimbladder in Fishes and its importance.
b) Aerial adaptation in birds.
c) Biting mechanism of poisonous snake.
d) Urinogenital ducts in vertebrates.
e) Various kind of feather in birds

PROVINCIAL MANAGEMENT SERVICES ETC. 2014
SUBJECT: ZOOLOGY PAPER-II

Attempt ONE question from each section.

Section-A

Q. No.1 Explain with detail mechanism and enzymology of DNA replication, how it is differs in Prokaryotes and Eukaryotes.
Q. No. 2 (A) Give detail of various steps by which a pair of Electrons move on Electron Transport Chain.
(B) Describe meiosis in detail and support your answer with diagrams.

Section-B

Q. No. 3 How animals carry on thermoregulation; also give details of control mechanism involved.
Q. No. 4 (A) Differentiate between active and resting membrane potential with detail.
(B) Explain sliding filament model of muscle contraction.

Section-C

Q. No. 5 (A) What is chromosomal aberration, explain their types with examples.
(B) Define and explain gene linkage with example.
Q. N0. 6 (A) What is the importance of transgenic animals in our lives, Give few examples.
(B) Give detailed account and properties of Cloning Vectors.

Section-D

Q. No. 7 (A) What is Hardy-Weinberg Principal, which factors alter the frequency genes in population and how?
(B) How Lamarkism and Darwinism differ, support your answer with facts.
Q. No. 8 (A) What is the role of Genetic Drift in evolution.
(B) Why mutations are considered as raw material of evolution.

Section-E

Q. No. 9 In what ways water pollution has affected Aquaculture in Pakistan.
Q. No. 10 (A) How nitrogen in cycled in an ecosystem.
(B) What are impacts of Mangrove deforestation on our economy?