PUNJAB PUBLIC SERVICE COMMISSION
Combined Competitive Examination (CCE) 2022
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) What are the different modes of locomotion in Protozoa?
b) Discuss in detail the shell in different groups of Molluscs.
(10 + 10 = 20 Marks)
Q. No. 2:
a) Describe the general characteristics of phylum Aschelminthes.
b) Discuss different types of reproduction found in Porifera.
(10 + 10 = 20 Marks)
Q. No. 3:
a) Explain the water vascular system in Echinodermata.
b) Write a note on larval forms of various classes of Arthropoda.
(10 + 10 = 20 Marks)
Q. No. 4:
Write short notes on any FOUR of the following:
a) Tagmatization
b) Metamorphosis
c) Nematocysts
d) Polymorphism
e) Body plan of triploblastic acoelomates
(4 × 5 = 20 Marks)
SECTION – II
Q. No. 5:
a) Write a detailed note on earliest known vertebrates.
b) Discuss adaptations in external structure and locomotion in mammals.
(10 + 10 = 20 Marks)
Q. No. 6:
a) What adaptations in birds promote endothermy and flight? Why is endothermy important?
b) Explain causes of evolution and extinction of dinosaurs.
(10 + 10 = 20 Marks)
Q. No. 7:
a) Discuss origin and evolution of mammals with synapsid lineage.
b) Describe excretion and osmoregulation in amphibians.
(10 + 10 = 20 Marks)
Q. No. 8:
Write short notes on any FOUR of the following:
a) Feathers
b) Migration of birds
c) Endothermy
d) Specialized teeth in mammals
e) Evolution of jaw in vertebrates
(4 × 5 = 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 between reversible and irreversible enzyme inhibition.
b) Differentiate between catabolic and anabolic pathways.
(10 + 10 = 20 Marks)
Q. No. 2:
a) Explain chemical reactions occurring during Krebs cycle.
b) What is meiotic nondisjunction? Its consequences in humans.
(10 + 10 = 20 Marks)
SECTION – B
Q. No. 3:
a) Evolution of nitrogenous waste excretion in aquatic and terrestrial animals.
b) Mechanisms of heat regulation between animals and environment.
(10 + 10 = 20 Marks)
Q. No. 4:
a) Describe motility of gastrointestinal tract in animals.
b) Neurohormones of posterior pituitary, their targets and functions.
(10 + 10 = 20 Marks)
SECTION – C
Q. No. 5:
a) Define multiple alleles with example.
b) Recessive genetic disorders in humans.
(10 + 10 = 20 Marks)
Q. No. 6:
a) What is genetic code? Its characteristics.
b) Transgenic animals: production and uses.
(10 + 10 = 20 Marks)
SECTION – D
Q. No. 7:
a) Explain Neo-Darwinism and validation of Darwinism.
b) How natural selection leads to adaptations? Explain with example.
(10 + 10 = 20 Marks)
Q. No. 8:
a) Differentiate between natural selection and genetic drift.
b) Hardy-Weinberg equilibrium and factors affecting microevolution.
(10 + 10 = 20 Marks)
SECTION – E
Q. No. 9:
a) Describe closed ecological system.
b) Energy transfer efficiency in ecosystems.
c) Nutrient cycling and pollution; carbon cycle and global warming.
(5 + 5 + 10 = 20 Marks)
Q. No. 10:
a) Animal adaptation to habitats.
b) Desert adaptations in animals.
(10 + 10 = 20 Marks)
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