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
Q1. a) Describe different types of skeletons in each class of sponges. b) Discuss various types of canal systems in phylum Porifera.
Q2. a) describe the life cycle of Fasciola Hepatica b) describe reproduction and development in turbellaria.
Q3. a) explain the feeding and digestive system of Nematoda. b) give an account of reproduction and development in Nematoda.
Q4. a) discuss the evolutionary relationship of Annelida with other animals. b) What is metamerism? Discuss its advantages in annelids.
SECTION-II
Q5. Describe the mechanism of osmoregulation in freshwater and marine fishes.
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Q6. Discuss the rise and fall of reptiles during their evolutionary history.
Q7. Give an account of aerial adaptations and migration of birds.
Q8. Discuss Amphibians as the first terrestrial vertebrates.
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) Describe various models of plasma membrane. Explain the more dynamic model with justification. b) Elaborate the extra nuclear organelles in eukaryotic cell with their functions.
Q. No. 2 a) Elaborate different nuclear and extra nuclear cell organelles along with their functions. Draw the labelled diagrams also. b) Differentiate between reversible and irreversible enzymatic inhibition.
SECTION-B
Q. No. 3 a) How the osmoregulation contributes in homeostasis? Describe process of osmoregulation in vertebrates. b) Write in detail the mechanisms of active membrane potential and resting membrane potential. Support the answer with suitable diagrams.
Q. No. 4 a) Describe the mechanism of respiration in animals, write the role of different organs of respiratory system in detail. b) What are different organs involved in circulatory system? Write the cardiovascular mechanism comprehensively.
SECTION-C
Q. No. 5 a) Differentiate between two principles of Mendel namely the law of segregation and law of independent assortment. b) How can pedigree analysis be used to predict genotypes of the future offspring?
Q. No. 6 a) Discuss a case of mammalian embryo who has a blood type antigenically different from its mother. b) What is epistasis? Explain a pattern of epistatic gene interaction in humans.
SECTION-D
Q. No. 7 a) How can genetic drift contribute to evolution? What are the causes of genetic drift? b) Why is the natural selection considered a primary mechanism of adaptive evolution?
Q. No. 8 a) Which mechanisms provide raw materials for the process of natural selection to act upon? b) What is adaptive radiation? Explain a case example of adaptive radiation.
SECTION-E
Q. No. 9 a) How agroecosystems differ from natural ecosystems? What are the different types of agroecosystems? b) Describe a general model of nutrient cycling showing the primary reservoirs of nutrients.
Q. No. 10 a) Differentiate between gaseous nutrient cycles and sedimentary cycles. b) Briefly describe the major steps in nitrogen cycle.
