PMS Zoology Past Paper 2023 PDF

PUNJAB PUBLIC SERVICE COMMISSION

Combined Competitive Examination (CCE) 2023

For Recruitment to the Posts of Provincial Management Service (PMS)

SUBJECT: Zoology (Paper-1)

Time Allowed: 3 Hours

Maximum Marks: 100

Note: Attempt FIVE questions, at least TWO questions from each section. Attempt in Urdu or English.

SECTION – I

Q. No. 1:
a) How protozoans maintain homeostasis?
b) Discuss symbiotic lifestyle in protozoans.
(10 + 10 = 20 Marks)
Q. No. 2:
Describe various forms of canal systems and their significance in Porifera.
(20 Marks)
Q. No. 3:
Explain evolutionary relationship of three classes of Annelida in light of traditional and modern cladistics interpretation.
(20 Marks)
Q. No. 4:
a) What are the different modifications of foot in Mollusca?
b) What is torsion? What are its adaptive advantages in gastropods?
(10 + 10 = 20 Marks)

SECTION – II

Q. No. 5:
a) Discuss structure and function of swim bladder in fishes.
b) Describe excretion and osmoregulation in fishes.
(10 + 10 = 20 Marks)
Q. No. 6:
Give an account of reproduction in Amphibia and discuss importance of courtship behavior.
(20 Marks)
Q. No. 7:
a) What are different types of feathers in birds?
b) What adaptations in birds promote endothermy and flight?
(10 + 10 = 20 Marks)
Q. No. 8:
Describe in detail the poisonous apparatus and biting mechanism of poisonous snakes.
(20 Marks)

SUBJECT: Zoology (Paper-II)

Time Allowed: 3 Hours

Maximum Marks: 100

Note: Attempt FIVE questions, selecting ONE from each section.

SECTION – A

Q. No. 1:
a) Differentiate in detail among replication, transcription and translation.
b) Write down the significance and mechanism of glycolysis, Krebs cycle and electron transport chain.
(10 + 10 = 20 Marks)
Q. No. 2:
a) Briefly describe structure and function of mitochondria.
b) What are the mechanisms by which enzymes accelerate cellular reactions?
(10 + 10 = 20 Marks)

SECTION-B

Q. No. 3:
a) Which adaptive mechanisms of water regulation are used by insects to limit evaporative loss?
b) Describe osmoregulatory adaptations in desert mammals.
(10 + 10 = 20 Marks)
Q. No. 4:
a) How nervous coordination systems work in animals? Describe in detail.
b) Describe the physiological anatomy of digestive tract in animals.
(10 + 10 = 20 Marks)

SECTION-C

Q. No. 5:
a) Write down usefulness of DNA recombinant technology in human life with practical examples.
b) How do gene mutations occur? What are the consequences of genetic mutation?
(10 + 10 = 20 Marks)
Q. No. 6:
a) Differentiate between crossing over and recombination. How are these mechanisms affected by gene linkage?
b) Describe the factors that affect recombination frequencies.
(10 + 10 = 20 Marks)

SECTION-D

Q. No. 7:
a) What are the assumptions of Hardy-Weinberg principle? How do these assumptions influence allele frequencies?
b) Explain the statement that Charles Darwin knew about survival of the fittest but had no idea about the arrival of the fittest.
(10 + 10 = 20 Marks)
Q. No. 8:
a) “Ontogeny recapitulates phylogeny” — elaborate in detail.
b) Describe the theory of organic evolution with supporting examples.
(10 + 10 = 20 Marks)

SECTION-E

Q. No. 9:
a) What is greenhouse effect? What are its causes and impact on ecosystem?
b) Describe the role of predators and decomposers in an ecosystem.
(10 + 10 = 20 Marks)
Q. No. 10:
a) Differentiate between anthropogenic eutrophication and natural eutrophication. Suggest measures to reduce both types.
b) What is desertification? Explain its causes and remedial measures.
(10 + 10 = 20 Marks)

Leave a Reply

Your email address will not be published. Required fields are marked *